Open Source Software Directories

Open Source Software Directories

There are several popular open source software directories, including:

Active Agenda

An active agenda refers to a list of items or tasks that are currently being worked on or prioritized. It is often used in meetings or in project management to ensure that all important topics are discussed and addressed in a timely manner. The term can also refer to a person’s personal schedule or plan for the day or week, outlining their priorities and responsibilities.

Ansible

Ansible is a free and open-source automation tool that can be used to configure, manage, and deploy software on servers and other network devices. It uses a simple, human-readable language called YAML to describe the desired state of systems, and then automatically enacts those changes.

Ansible is designed to be simple to use, yet powerful enough to handle complex tasks. Some of the key features of Ansible include:

• Agentless: Ansible does not require any software to be installed on the target systems, it uses SSH to communicate with the target systems.
• Idempotent: Ansible ensures that the end state of the system is the same, no matter how many times the same task is executed.
• Modularity: Ansible uses a reusable, modular structure called “Ansible Playbooks” to organize and execute automation tasks.
• Inventory management: Ansible can manage a large number of hosts using an inventory file, allowing for easy scaling.
• Support for various platforms: Ansible can work with multiple operating systems and devices, including Linux, Windows, Network devices, Cloud providers and more.

Ansible is widely used in IT operations, IT automation, and DevOps to automate repetitive tasks, such as software provisioning, configuration management, and application deployment.

It is also designed to work with other DevOps tools such as Jenkins, Docker, and Kubernetes.

Arduino

Arduino is an open-source electronics platform based on simple microcontroller boards and a development environment for writing software for the boards. It is designed to make it easy for anyone to get started with electronics and programming. The boards feature various inputs and outputs, such as digital and analog pins, which can be used to control and read sensors, actuators, and other electronic devices.

Arduino boards are based on the AVR microcontroller, which is a small computer-on-a-chip that can be programmed to perform a wide range of tasks. The boards come in a variety of different forms, including the Arduino Uno, which is a popular choice for beginners, and the Arduino Mega, which has more memory and more input/output pins.

The Arduino development environment is based on the open-source programming language C++, and it includes a code editor, a compiler, and a programmer. It is designed to be easy to use, even for those with no programming experience.

Arduino is widely used by hobbyists, educators, and professionals for a wide range of projects, from simple LED blinkers to complex robotics and Internet of Things(IoT) systems. Its simplicity, flexibility, and affordability make it a popular choice for anyone interested in learning about electronics and programming.

Atom

Atom is a free and open-source text editor developed by GitHub. It is available for Windows, Mac, and Linux platforms.

Atom is designed to be highly customizable and extensible, allowing users to tailor the interface and functionality to their specific needs. Some of its features include:

• Multi-platform support
• Built-in package manager that allows users to easily install and update packages and themes
• Syntax highlighting and auto-completion
• Split-screen editing and multiple panes
• Find and replace functionality with regular expressions support
• Built-in Git integration
• A wide range of community-developed packages and themes

Atom is a popular choice for developers and programmers because of its flexibility and customization options, as well as its integration with Git. It supports a wide range of programming languages and file formats, including JavaScript, Python, HTML, CSS and more.

It’s also known for its ability to handle large files, and has a built-in file system browser that allows users to easily navigate and manage their files.

Audacity

Audacity is a free and open-source digital audio editor and recording software. It is available for Windows, Mac, and Linux.

Audacity provides a wide range of audio editing tools, including:

• Recording audio from various sources such as microphone, line-in, or streaming audio
• Importing audio files in various formats like WAV, MP3, AIFF, and more
• Non-destructive editing, which allows you to make changes to the audio without modifying the original file
• Multi-track editing, which allows you to work on multiple audio tracks at the same time
• Effects such as equalization, compression, and noise reduction
• Support for VST and LADSPA plug-ins for additional effects and processing

Audacity is widely used by podcasters, musicians, and audio engineers to record, edit and enhance audio files. It can also be used to edit audio files for videos, podcasts, and other audio projects.

It is a great option for those who are looking for a free, open-source and cross-platform audio editor with a wide range of features.

Blender

Blender is free and open-source 3D creation software. It can be used for a wide range of tasks such as 3D modeling, animation, compositing, simulation, video editing, and motion tracking. Blender has a wide range of features and tools such as a built-in renderer, sculpting, texturing, and particle simulation. It also has a customizable user interface and supports third-party add-ons and plugins.

Blender is used in a variety of fields, including film and video game production, architectural visualization, and product design. It has been used in the production of several films, including the Academy Award-winning short film “Adam” and the open-movie projects like “Elephants Dream” and “Sintel”. Blender is available for Windows, Mac and Linux and it also has a growing number of users in industries such as architecture, interior design, product design, and advertising.

CryptPad

CryptPad is a web-based collaborative document editor that uses client-side encryption to protect the privacy of the users’ data. It was designed to provide a secure and easy-to-use alternative to other web-based document editors like Google Docs.

CryptPad uses a technique called “zero-knowledge encryption” to encrypt the users’ data on the client-side, meaning that the data is encrypted before it is sent to the server, and the server never has access to the unencrypted data. This ensures that the data is protected from any unauthorized access, even from the server operators.

CryptPad supports real-time collaboration, allowing multiple users to work on the same document simultaneously. It also allows for easy sharing of documents, with the option to set different levels of access for different users.

The platform also supports various types of documents such as Rich Text documents, Spreadsheets, Code Editor and Presentations.

It is open-source and runs on Node.js, and can be self-hosted.

It is also available as a paid service with more features.

Data visualization

Data visualization is the process of using graphical representations to help make sense of large and complex data sets. By using visual elements such as charts, graphs, and maps, data visualization allows for more effective data analysis and communication of information.

There are many different types of data visualizations, including:

• Bar charts and histograms for comparing data across different categories
• Line charts and area charts for tracking changes over time
• Pie charts and donut charts for showing proportions and percentages
• Scatter plots and bubble charts for showing relationships between multiple variables
• Heat maps and choropleth maps for displaying spatial data

There are many tools available for creating data visualizations, including Excel, R, Python and Tableau. Some open-source tools include Matplotlib, Seaborn and ggplot2 (for Python), D3.js and Highcharts (JavaScript libraries) and R’s ggplot2.

Data visualization can be used in a variety of fields such as Business, Science, Social Science, and Humanities, for instance, to analyze trends, patterns, and relationships in data, and to make data-driven decisions. It’s also an important aspect of Data Science and Business Intelligence.

Docker

Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Containers allow a developer to package up an application with all of the parts it needs, such as libraries and other dependencies, and ship it all out as one package.

Docker allows developers to create, manage and deploy containers on various platforms. The containers are lightweight, portable and self-sufficient, which makes them a perfect fit for micro services and containerized applications.

Docker also provides a centralized hub called Docker Hub where developers can store and distribute their containers publicly or privately.

Docker is available on multiple platforms including Windows, Linux, and MacOS.

Drupal

Drupal is a free and open-source content management system (CMS) that is designed to build and manage websites. It is written in the programming language PHP and uses a database, such as MySQL, to store its data. Drupal is a popular choice for building web applications, e-commerce sites, and community-driven websites.

Drupal provides a wide range of features for building and managing websites, including content creation and management, user management, and site administration. It also has a large and active community of developers and users, which has created a wide range of modules (add-ons) and themes (templates) that can be used to add new features and functionality to a Drupal website.

Drupal also has a flexible data model that allows developers to create custom content types and fields, which can be used to store structured data in a way that makes it easy to display and manage. Additionally, Drupal is known for its scalability and security, making it suitable for high traffic websites and sites that require high level of security.

Drupal is released under the GNU General Public License and it is widely used by government agencies, educational institutions, and non-profit organizations, as well as by many other types of organizations of all sizes.

Elasticsearch

Elasticsearch is a free and open-source search engine based on the Lucene library. It is a distributed, full-text search engine designed for handling large amounts of data in real-time. It is commonly used for a wide range of use cases such as search and analytics, log analytics, and security analytics.

Elasticsearch uses a simple RESTful API, making it easy to use and integrate with other systems. It also provides a powerful query language, called the Elasticsearch Query DSL, which allows users to perform complex search queries and filter results.

Elasticsearch is highly scalable and can be used to index, search, and analyze large volumes of data quickly. It also provides a wide range of built-in analytics and visualization capabilities, allowing users to easily analyze and understand the data.

Elasticsearch is often used in combination with other tools in the Elastic Stack, such as Logstash and Kibana, to provide a complete solution for data ingestion, storage, analysis and visualization.

Elasticsearch is a popular choice for organizations that need to search and analyze large amounts of data in real-time, it is widely used in many industries such as e-commerce, healthcare, finance, and security.

FileZilla

FileZilla is a free and open-source FTP (File Transfer Protocol) client. It is available for Windows, Mac, and Linux operating systems. It is a powerful and easy-to-use client that allows users to upload, download and manage files on a remote server.

FileZilla supports both FTP and SFTP (SSH File Transfer Protocol) and allows for both active and passive file transfers. It also includes a variety of features such as the ability to resume interrupted transfers, and support for IPv6 and large files over 4GB. The interface is user-friendly with a simple layout, and allows for easy navigation of the files and directories on the remote server. It also supports drag-and-drop functionality, making it easy to transfer files between the local computer and the remote server.

FileZilla is a popular choice among web developers and website administrators because it is free, open-source and provides a range of features. It is also frequently used by students, researchers, and people who need to transfer large files.

Firefox

Firefox is a free and open-source web browser developed by the Mozilla Foundation. It was first released in 2004 and is available for Windows, Mac, and Linux operating systems as well as mobile devices. Firefox is known for its speed, security, and support for a wide range of web standards.

One of Firefox’s key features is its support for extensions, which are small programs that add additional functionality to the browser. This allows users to customize their browsing experience by adding features such as ad blockers, password managers, and more. Firefox also includes a built-in pop-up blocker, and it offers support for tabbed browsing, which allows users to have multiple web pages open in one window.

Another feature of Firefox is its support for privacy and security. Firefox includes a “Private Browsing” mode that doesn’t save any browsing history, cookies, or temporary files, and it has a “Tracking Protection” feature that blocks third-party trackers from collecting data about users. Firefox also includes a built-in password manager that can securely store login information for websites.

Firefox is a popular choice for many users due to its speed, security, and support for a wide range of web standards and it is also known for its commitment to privacy.

Franz

Franz is a free and open-source messaging app that allows users to combine different messaging services into a single app. It supports a wide range of services such as WhatsApp, Slack, Telegram, Facebook Messenger, and many more. Users can organize their messaging services into different workspaces, making it easy to switch between different conversations. Franz also provides a built-in calendar and task manager, making it a all-in-one communication tool. Additionally, it has support for native notifications, keyboard shortcuts and customizable themes. It’s available for Windows, Mac, and Linux, and it does not require any browser extension to use.

FreeCodeCamp

FreeCodeCamp is a non-profit organization that provides a free, self-paced coding curriculum that covers a wide range of web development skills, including HTML, CSS, JavaScript, and more advanced technologies such as React and Node.js. It is an interactive learning platform that includes coding challenges, articles, and videos to help users learn to code.

FreeCodeCamp’s curriculum is divided into several sections, starting with the basics of web development and progressing to more advanced topics such as front-end and back-end web development. Each section includes interactive coding challenges, articles, and videos that help users practice and apply what they’ve learned.

FreeCodeCamp also provides a supportive community of learners and developers who can help answer questions and provide feedback on projects. Additionally, the platform has a certification program that allows users to prove their skills and expertise in web development.

FreeCodeCamp is widely used by individuals and organizations as a free and effective way to learn web development. It is known for its comprehensive curriculum and its supportive community of learners and developers. It is also a popular choice for those looking to start a career in web development, as the certification program provides a way to showcase your skills and get hired.

GIMP

GIMP (GNU Image Manipulation Program) is a free and open-source raster graphics editor. It is used for image retouching, image editing, and image creation. It is available for Windows, Mac, and Linux operating systems.

GIMP offers a wide range of tools for image editing, including painting tools, selection tools, and transformation tools. It also supports layers and channels, which allows you to work on different parts of an image separately. GIMP also supports various image file formats such as JPEG, PNG, and TIFF, and it can also open and save Adobe Photoshop files. The software also has a wide range of plug-ins and scripts available, which can be used to add new features and capabilities.

GitLab

GitLab is a web-based Git repository manager that provides source code management (SCM), continuous integration, and more. It is a platform that allows developers to host, manage and collaborate on their Git repositories.

GitLab provides a web-based interface for managing and collaborating on Git repositories, as well as a set of tools for software development, such as:

• Source Code Management (SCM)
• Continuous Integration and Continuous Deployment (CI/CD)
• Bug Tracking and Issue Management
• Collaboration and code review tools
• Built-in Container Registry
• Integrated Wiki and more

GitLab also provides a built-in continuous integration and continuous delivery (CI/CD) system, which allows for automating the process of building, testing, and deploying code.

GitLab is open-source and can be self-hosted, it also offers a paid version with more features and support.

It is written in Ruby and runs on Linux and Windows servers.

It is widely used by developers and organizations to manage their software development projects and collaborate with their teams.

Google

Google is a multinational technology company that specializes in Internet-related services and products. These include search engines, online advertising technologies, cloud computing, software, and hardware. Google was founded in 1998 by Larry Page and Sergey Brin while they were Ph.D. students at Stanford University in California.

Google’s flagship product, the Google Search engine, is the most widely used search engine on the Internet, handling billions of searches every day. Google also offers a variety of other products and services, such as Google Maps, Google Earth, YouTube, and Google Drive. Google’s advertising network is one of the largest and most widely used in the world. Google’s Chrome web browser and the Android mobile operating system also dominate their respective markets.

Google is known for its informal corporate culture and its motto, “Don’t be evil.” In 2015 Google restructured itself as Alphabet Inc, becoming a holding company and Google as subsidiary.

Gradle

Gradle is a free and open-source build automation tool that is widely used for building Java and other JVM-based projects. It’s based on a Groovy-based domain-specific language (DSL) and can be used to automate the building, testing, deployment, and release of software. Gradle is designed to be highly customizable and extensible, allowing developers to create their own plugins and tasks to meet their specific needs.

Some of the key features of Gradle include:

• Support for multi-project builds, allowing for easy management of large and complex projects
• Support for incremental builds, which can significantly improve build performance
• Support for dependency management and versioning, making it easy to include and manage third-party libraries
• Support for various build types, including Java, C++, and Android
• Support for various testing frameworks, including JUnit, TestNG, and Spock
• Support for various version control systems, including Git, Subversion, and Mercurial.

Gradle is an alternative to other popular build automation tools such as Apache Maven, and it’s gaining popularity because of its flexibility and performance.

Grafana

Grafana is an open-source platform for data visualization and monitoring. It helps users to query, visualize, and alert on metrics and logs no matter where they are stored. Grafana can connect to a variety of data sources, including Prometheus, InfluxDB, Graphite, Elasticsearch, and many others.

Grafana allows users to create and share interactive and dynamic dashboards. It supports a wide range of chart types, such as line graphs, bar graphs, and heatmaps, and it also provides alerting capabilities to notify users of issues or anomalies. Additionally, it’s also possible to use Grafana to create and share a dashboard with other users in a team, company or community. It is widely used in DevOps and IT Operations for monitoring and troubleshooting systems and applications.

Handbrake

Handbrake is a free and open-source video transcoder software. It is available for Windows, Mac, and Linux platforms.

Handbrake can convert videos from one format to another, and also can be used to optimize videos for specific devices and platforms, such as smartphones, tablets, and game consoles.

It supports a wide range of input and output formats, including MP4, MKV, AVI, and M4V for video and AAC, MP3, and AC3 for audio. Handbrake also provides a variety of built-in presets for different devices and platforms, as well as the ability to create custom presets.

Handbrake also provides many advanced features such as:

• Video and audio codecs configuration
• Picture settings, such as resolution, aspect ratio, and cropping
• Subtitles tracks, chapters, and meta-data.
• 2-pass encoding and Constant Quality
• Multi-threading

Handbrake is a popular tool among users who want to convert and optimize videos for different devices and platforms, and also it is widely used to compress videos to reduce their size while maintaining good quality.

H5P

H5P (HTML5 Package) is a free and open-source content creation framework for creating and sharing interactive HTML5 content. It is designed to work within learning management systems (LMS) such as Moodle and Canvas, as well as on websites, and it allows users to create interactive content such as quizzes, interactive videos, presentations, and more.

H5P provides a wide range of interactive content types such as multiple choice questions, true/false questions, drag and drop, flashcards and more. It also provides a content editor that allows users to create and edit interactive content with a simple drag-and-drop interface. H5P content can be embedded on websites and Learning Management Systems (LMSs) and can be reused and remixed.

H5P is built on open web standards and is designed to be accessible to as many users as possible. It is also designed to be easy to use and requires no programming skills.

H5P is a popular choice among educators and e-learning professionals, as it allows them to create interactive and engaging content without needing programming skills. It can be used in a wide range of settings, including K-12 education, higher education, and corporate training.

Inkscape

Inkscape is a free and open-source vector graphics editor for creating and editing SVG (Scalable Vector Graphics) images. It is similar to commercial software like Adobe Illustrator and CorelDRAW but is available for free. Inkscape has a wide range of features, including support for layers, gradients, and advanced path editing. It also has a flexible text handling system, allowing for text on a path, flowed text, and direct editing of the SVG source code. Inkscape is available for Windows, Mac, and Linux, and can be extended through the use of extensions.

Jenkins

Jenkins is an open-source automation server that helps automate parts of the software development process. It provides hundreds of plugins to support building, deploying, and automating any project. Jenkins can be used to automate tasks such as building, testing, and deploying software, as well as other repetitive tasks in the software development process. It is written in Java and runs on a variety of platforms, including Windows, Linux, and macOS. Jenkins allows for easy setup and configuration of a continuous integration and continuous delivery (CI/CD) pipeline, which automates the process of building, testing, and deploying code changes. This can help organizations to improve software quality, speed up development, and reduce human error.

Jitsi

Jitsi is free and open-source video conferencing software that allows users to make voice and video calls, as well as share their screen with others. It is designed to be easy to use and can be run on a wide range of platforms, including Windows, Mac, Linux, and mobile devices.

Jitsi uses the WebRTC protocol, which allows for real-time, peer-to-peer communication, and it also supports a wide range of video codecs and encryption options, making it suitable for secure video conferencing.

Jitsi also includes a number of features that make it easy to use, such as the ability to join a call using a simple link, and the ability to share your screen with others. It also includes a built-in chat feature, allowing users to communicate via text during a call.

Jitsi also includes a set of developer-oriented features such as an API and support for Webhooks and XMPP, allowing for easy integration with other systems and applications.

Jitsi is a popular choice for both personal and professional use, it is known for its ease of use, security and its wide range of features. It is widely used by organizations, communities, and individuals that need a secure and easy-to-use video conferencing solution.

Jmol

Jmol is a free and open-source, cross-platform, 3D molecular viewer for visualizing, manipulating and analyzing chemical structures. It can read a wide variety of chemical file formats, including PDB, MOL, MOL2, and CIF. Jmol can display and manipulate molecules in a wide variety of ways, such as showing the molecule as a ball-and-stick model, a space-filling model, or a ribbon model.

Jmol can be used as a standalone application or as an applet embedded in a web page. It also can be integrated into other software, such as databases or electronic laboratory notebooks. Jmol has a wide range of features such as measurement tools, animation, and scripting. It also supports a variety of color schemes, lighting models and visual representations.

Jmol is widely used in chemistry, biochemistry, materials science, and other fields for visualizing and analyzing chemical structures. It is also commonly used in education, particularly in chemistry courses. Jmol is easy to use, has a wide range of features, and is compatible with a wide range of chemical file formats making it a popular choice among scientists and students alike.

KNIME

KNIME (Konstanz Information Miner) is a free and open-source data analytics platform that allows users to visually create data pipelines and perform data analysis tasks. It is designed for data scientists and analysts, and it can be used for a wide range of data analysis tasks, including data pre-processing, data exploration, modeling, and visualization.

KNIME provides a visual interface for creating data pipelines, where each node in the pipeline represents a specific data analysis step, such as reading in data from a file, filtering data, or training a machine learning model. KNIME also provides a wide variety of pre-built nodes for common data analysis tasks, and it also supports the use of R and Python for advanced analysis tasks.

KNIME allows for the integration of various data sources, such as databases, flat files, and web services. It also has the ability to handle big data, providing solutions for distributed computing and in-memory data processing.

KNIME is a powerful tool for data scientists and analysts, allowing them to automate data analysis processes, and perform data exploration, modeling and visualization in an easy and interactive way. It is also commonly used in many industries such as finance, healthcare, and marketing.

Kubernetes

Kubernetes is an open-source container orchestration system for automating the deployment, scaling, and management of containerized applications. It was originally developed by Google and is now maintained by the Cloud Native Computing Foundation (CNCF).

Kubernetes allows you to run and manage containers across multiple machines, which can be physical, virtual, or in the cloud. It provides a number of features to help you manage and scale your containerized applications, including:

• Automatic scaling of containers based on demand
• Self-healing capabilities, where the system will automatically replace or restart containers that fail
• Load balancing to distribute incoming traffic across multiple containers
• Rolling updates, which allows you to update your application without downtime
• Service discovery, which allows your application to automatically discover and connect to other services

Kubernetes is platform-agnostic and works with any container runtime that complies with the Open Container Initiative (OCI) standards, such as Docker.

It is widely used in industry and cloud providers offer managed Kubernetes services, such as AKS, EKS, GKE, …

LibreOffice

LibreOffice is a free and open-source office suite that provides a range of tools for creating and editing documents, spreadsheets, presentations, and more. It is compatible with a variety of file formats, including those used by Microsoft Office. Some of the key features of LibreOffice include a word processor (Writer), a spreadsheet program (Calc), a presentation program (Impress), a drawing program (Draw), a database management program (Base), and a formula editor (Math). LibreOffice also includes a number of templates for creating documents and presentations, as well as support for macro programming and the ability to extend the functionality of the suite through the use of add-ons. It is available for Windows, MacOS, and Linux. It’s known for being a free and open-source alternative to Microsoft Office, and provides most of the features of Microsoft Office.

Linphone

Linphone is a free and open-source software application for voice and video over IP (VoIP) calling and instant messaging. It is available for a wide range of platforms, including Windows, Mac, Linux, iOS and Android.

Linphone uses the SIP (Session Initiation Protocol) to establish and manage calls and instant messaging sessions. It also supports a wide range of codecs, such as G.711, G.722, and Opus, to ensure high-quality audio and video. It also includes support for end-to-end encryption, making it suitable for secure communications.

Linphone includes a set of features that make it easy to use, such as the ability to make calls and send instant messages using a simple address, and the ability to share your screen and files during a call. It also includes a built-in address book, allowing users to easily manage contacts.

Linphone also provides a set of developer-oriented features such as an API and support for WebRTC and SIP, allowing for easy integration with other systems and applications.

Linphone is a popular choice for organizations and individuals who need a secure and easy-to-use VoIP and instant messaging solution. It is widely used by small and large businesses, educational institutions, and government organizations.

Linux

Linux is a free and open-source operating system that is based on the Unix operating system. It is a popular choice for servers, desktops, and mobile devices, and it is widely used in a variety of settings, including homes, businesses, and government organizations.

Linux is known for its stability, security, and flexibility, and it is highly customizable to fit the needs of different users and organizations. It is also highly scalable, and can be used on a wide range of devices, from small embedded systems to large supercomputers.

The Linux operating system is made up of three main components: the kernel, system libraries, and user-space programs. The kernel is the core of the operating system and manages the communication between the hardware and software. System libraries provide a set of functions and routines that allow user-space programs to interact with the kernel. User-space programs are the applications that run on top of the operating system, such as web browsers, text editors, and games.

There are many different distributions of Linux, such as Ubuntu, Fedora, Debian, and Red Hat. These distributions have different features and are aimed at different types of users, such as beginners, experts, and enterprise users.

Linux has a big and active community, which contributes to the development of the operating system, and provides support and resources to its users. This also makes it easy to find solutions to problems and to customize the operating system to your specific needs.

MAME

MAME (Multiple Arcade Machine Emulator) is a free and open-source emulator that allows users to play classic arcade games on modern computers. It is designed to emulate the hardware of arcade game systems, allowing users to play the games as they were originally intended. MAME supports a wide range of arcade games from the 1970s to the 2000s, including games from companies such as Atari, Konami, and Namco.

MAME is a command-line based program, but there are also graphical front-ends available for it, that provides an easy-to-use interface for browsing and launching games. It also has a wide range of features such as the ability to save and load game progress, and the ability to customize game controls.

MAME is widely used by fans of classic arcade games, as well as by game developers and researchers, to study and preserve the history of arcade games. It is also a popular choice for arcade game enthusiasts who want to play classic games on modern computers without having to purchase original hardware.

MAME is a great way to keep alive the legacy of the classic arcade games and allows people to experience the games as they were originally designed, it is also a valuable tool for researchers, game developers and arcade game enthusiasts.

MantisBT

MantisBT is a free and open-source web-based bug tracking system. It is written in PHP and uses a MySQL, PostgreSQL or MS SQL database to store data. It is designed to help software development teams keep track of bugs and issues that need to be resolved. MantisBT provides a web-based interface for users to submit and track bugs, and a powerful set of management and reporting tools for developers. It also has support for email notifications, multi-language support, and an API for integration with other systems. It is widely used in software development and IT teams for bug tracking and issue management.

Mastodon

Mastodon is a free, open-source social media platform that is similar to Twitter. It was launched in 2016 and is based on the ActivityPub protocol, which allows for decentralized and federated communication between instances. Users can share text, images, and videos, and can also “boost” (re-share) posts from other users. Mastodon has a strong emphasis on privacy and community-building, and has a decentralized structure that allows for a more diverse range of voices and perspectives.

Matrix

Matrix is an open-source project that provides a decentralized, real-time communication platform that allows users to communicate with each other using a variety of communication methods such as chat, voice, and video. It aims to provide a secure and decentralized alternative to existing communication platforms such as WhatsApp, Slack and Skype.

Matrix uses a distributed, peer-to-peer architecture that allows users to communicate directly with each other, rather than relying on centralized servers. This allows for greater security, as messages are end-to-end encrypted and stored on the users’ own devices rather than on a centralized server.

Matrix supports a wide range of clients, including web, mobile, and desktop clients, as well as a variety of programming languages, making it easy to integrate with other systems and applications. It also supports a wide range of communication methods, such as chat, voice, and video, and it allows for easy file sharing and collaboration.

Matrix also includes a built-in federation feature that allows users on different servers to communicate with each other seamlessly, and it allows for easy integration with other platforms such as Slack, WhatsApp, and IRC.

Matrix is gaining popularity as a secure and decentralized communication platform that is easy to use and customize, it is also being adopted by organizations, communities, and individuals who value privacy and security in their communication.

Mautic

Mautic is open-source marketing automation software that allows businesses to automate and personalize their marketing efforts. It offers a wide range of features such as email marketing, lead management, social media integration, and analytics. Mautic can be used to create and manage customer journeys, track and score leads, and personalize communication with customers across multiple channels. It is a self-hosted solution, which means that businesses can install it on their own servers, giving them complete control over their data.

Moodle

Moodle is a free and open-source learning management system (LMS) designed to help educators create effective online learning sites. It provides a wide range of features for creating and managing online courses, including support for creating and organizing course content, managing assignments, quizzes, and assessments, and tracking student progress. Moodle also offers a variety of tools for communication and collaboration between students and teachers, such as forums, wikis, and messaging. It is written in PHP and can be installed on a variety of platforms, including Linux, Windows, and macOS. It’s widely used by schools, universities and companies to create and manage online learning portals. It can be easily customized and extended with plugins and themes.

Mycroft

Mycroft is an open-source artificial intelligence (AI) platform that allows developers to create voice-controlled applications, such as smart speakers and virtual assistants. It is designed to be highly customizable and can be used to create a wide range of applications, from simple voice commands to more complex natural language processing tasks.

Mycroft uses a combination of natural language processing and machine learning to understand and respond to voice commands. It also includes a set of pre-built skills, such as playing music, setting reminders, and answering questions, which can be easily added to a Mycroft-powered application.

Mycroft can be run on a wide range of devices, including Raspberry Pi, Linux and Windows desktop computers and mobile devices. It is also designed to be easily integrated with other systems and devices, such as smart home devices and internet-of-things (IoT) devices.

Mycroft is known for its flexibility, as it allows developers to build their own skills and integrate with other services, it also has an active community that contributes to the development and maintenance of the platform. It is a popular choice for organizations and individuals who want to create their own voice-controlled applications and want to maintain control over their data and privacy.

Natron

Natron is free and open-source compositing software for video post-production. It allows combining multiple video or image layers with various effects and filters, such as color correction, compositing, keying, tracking, and more. Natron is designed to be a flexible and powerful tool that can handle a wide range of visual effects, while still being easy to use. It is cross-platform, meaning it runs on Windows, MacOS and Linux. Natron is similar to other compositing software such as Adobe After Effects and Nuke and it’s often used in visual effects and animation industries. It supports various file formats and it has a python API, which allows users to create their own tools and scripts.

Nextcloud

Nextcloud is a free and open-source, self-hosted file sharing and collaboration platform that allows users to store, share, and collaborate on files and documents. It is similar to other cloud storage services such as Dropbox and Google Drive, but it allows users to host the service on their own servers or in a private cloud.

Nextcloud provides a wide range of features for storing, sharing, and collaborating on files and documents. It includes support for file syncing, version control, and collaboration tools such as commenting and task management. It also includes support for end-to-end encryption, allowing users to secure their files and data.

Nextcloud provides a web-based interface for managing files and documents, as well as apps for mobile devices and desktop computers. It also includes support for integration with other services, such as calendar and contacts, and it provides an API for developers to extend its functionality.

Nextcloud is a popular choice for organizations and individuals who want to store, share, and collaborate on files and documents while maintaining control over their data, its open-source nature allows for flexibility and security. It is widely used by small and large organizations, educational institutions and governments.

NGINX

NGINX is a free and open-source web server and reverse proxy server. It is known for its high performance and low resource usage, making it a popular choice for web servers and reverse proxy servers.

NGINX is often used as a reverse proxy server, which means it sits in front of one or more web servers and forwards client requests to the appropriate web server. This can be useful for load balancing, which distributes client requests evenly across multiple servers to ensure that no single server is overwhelmed.

NGINX is also used as a web server, which can serve static content (such as HTML, CSS, and JavaScript files) directly to clients. It is particularly efficient at serving large numbers of small files, such as images.

NGINX also supports a wide range of features such as HTTP/2, gzip compression, and SSL/TLS encryption. It is widely used by high-traffic websites and is known for its stability, security and performance. It can be run on Windows, Linux, Mac and Unix operating systems.

NGINX also provides a commercial version of the software, called NGINX Plus, which offers additional features such as load balancing, content caching, and monitoring and management capabilities.

OBS

OBS (Open Broadcaster Software) is a free and open-source software for video recording and live streaming. It is available for Windows, Mac, and Linux operating systems. It is a popular choice among gamers, content creators, and professionals for recording and streaming gameplay, tutorials, and other types of video content.

OBS provides a wide range of features such as the ability to capture video and audio from multiple sources, the ability to add overlays and text to the video, and support for various streaming protocols such as RTMP and RTSP. It also allows users to record and stream in various resolutions and bitrates, and it has a built-in encoder for compressing and optimizing video for streaming.

OBS also has a plugin architecture that allows for the addition of new features and functionality through the use of third-party plugins. It also supports multiple scenes, allowing users to switch between different sources and setups during the recording or streaming.

OBS has a user-friendly interface and is known for its customization options and flexibility. It is widely used by content creators, video producers, and gamers alike to record and stream high-quality video content.

ONLYOFFICE

ONLYOFFICE is a free and open-source suite of office and productivity applications that includes a word processor, spreadsheet, and presentation software. It is designed to be a replacement for Microsoft Office and is compatible with a wide range of file formats, including Microsoft Office documents.

ONLYOFFICE features a number of tools for document editing, including a spell checker, a thesaurus, and a set of templates. The spreadsheet software includes a variety of formulas and functions, as well as support for charts and pivot tables. The presentation software includes a wide range of tools for creating professional-looking presentations, including the ability to add video and audio.

ONLYOFFICE also includes a collaborative editing feature that allows multiple users to work on the same document in real-time. This feature is particularly useful for remote teams that need to work on documents together.

ONLYOFFICE can be installed on your own server and can be integrated with a wide range of platforms such as Nextcloud, ownCloud, and Confluence. It can also be used as a standalone application or as a web-based service and can be used on Windows, Mac, and Linux operating systems.

OpenProject

OpenProject is open-source project management software that is designed for teams to manage and collaborate on projects. It provides a range of features such as task management, time tracking, and budgeting, as well as integration with other tools such as calendars and email. It is available as a self-hosted solution, which can be installed on your own server, or as a cloud-based solution. OpenProject is built using Ruby on Rails and AngularJS and is compatible with Linux, Mac, and Windows operating systems.

Passbolt

Passbolt is an open-source password manager that allows users to securely store and share passwords and other sensitive information. It is designed to be easy to use and integrates with popular web browsers, making it a convenient tool for both personal and business use. Passbolt uses end-to-end encryption to ensure that only authorized users can access the stored information, and it can be run on a self-hosted server for added security.

Percona

Percona is a company that provides open-source software and services for MySQL and MongoDB databases. The company’s primary product is Percona Server, an enhanced, drop-in replacement for MySQL that is fully compatible with the MySQL protocol, but with improved performance and additional features.

Percona Server includes a number of performance enhancements, such as the ability to handle larger data sets and increased scalability. It also includes additional storage engines such as XtraDB and TokuDB, which can improve performance for specific workloads. Percona also offers Percona XtraDB Cluster, a high-availability solution for MySQL that allows for automatic failover and load balancing.

Percona also provides other products such as Percona Toolkit, a collection of command-line tools for managing and optimizing MySQL and MongoDB databases, and Percona Monitoring and Management, a web-based tool for monitoring and managing MySQL and MongoDB databases.

Percona also offers professional services such as consulting, training, and support, to help customers to optimize their MySQL and MongoDB databases, and to achieve better performance and scalability.

Percona is known for its expertise in MySQL and MongoDB performance optimization, and it is widely used by companies that rely on these databases for their business-critical operations.

PostgreSQL

PostgreSQL is a powerful, open-source object-relational database management system (ORDBMS) with an emphasis on extensibility and standards-compliance. It is known for its reliability, data integrity, and robust feature set. Some of its notable features include support for advanced data types, full-text search, and concurrent access. It is often used for mission-critical applications and is available on a variety of platforms, including Linux, Windows, and macOS.

Quay

A quay (also spelled “key”) is a structure built along the shore of a body of water to allow boats and ships to dock and unload cargo or passengers. Quays can be made of various materials such as concrete, stone, or wood and are often found in harbors, ports, and marinas.

Raspberry Pi

Raspberry Pi is a small, low-cost, single-board computer developed by the Raspberry Pi Foundation in the United Kingdom. It is designed to promote the teaching of basic computer science in schools and developing countries. The Raspberry Pi is popular among hobbyists and educators for its versatility and affordability. It can be used for a wide range of projects, such as creating a media center, building a retro gaming console, setting up a home automation system, and more. It runs on a version of Linux, and supports several programming languages, including Python, which is one of the most popular languages for Raspberry Pi projects.

Riot

Riot is a free and open-source instant messaging and team collaboration app. It is designed to be simple, secure, and scalable, with features such as end-to-end encryption, group chat, file sharing, and voice and video calls. Riot is based on the Matrix protocol, which is an open standard for decentralized communication. This allows for interoperability with other Matrix-based apps, as well as integration with other tools and services. Riot also supports custom integrations via its API, allowing for integration with other tools and services. It is available as a web app and as a mobile app for iOS and Android, as well as as a desktop app for Windows, MacOS, and Linux. It’s known for its privacy-respecting features, easy usage and the ability to have a decentralized communication.

Snapcast

Snapcast is a free and open-source multi-room audio player. It allows users to synchronize audio playback across multiple devices in different rooms. It works by creating a network of audio players that connect to a central server, called the Snapcast Server, which streams the audio. The clients, called Snapcast Clients, receive the audio stream and play it back in sync.

Snapcast supports a wide range of audio formats, such as MP3, FLAC, and OGG, and it can work with different audio players, including MPD, Spotify, and VLC. It also provides an API for integration with other systems and can be controlled using a variety of apps and interfaces. Snapcast is available for Windows, Mac, Linux and Raspberry Pi, and it’s also possible to use it on mobile devices.

Solr

Apache Solr is a free and open-source search engine based on the Lucene library. It is a highly scalable, enterprise-ready search engine that is designed to handle large amounts of data and provide real-time search results. Solr is used for a wide range of use cases such as full-text search, faceted search, and geospatial search.

Solr uses a RESTful API, allowing it to be easily integrated with other systems, and it also provides a powerful query language, called the Solr Query Language (SOLR-QL), which allows users to perform complex search queries and filter results. Solr also provides a wide range of built-in analytics and visualization capabilities, allowing users to easily analyze and understand the data.

Solr is designed to be highly scalable and can handle large amounts of data, it also has the ability to handle real-time indexing and searching. It is commonly used in combination with other big data technologies like Apache Hadoop, as well as other data management technologies such as Apache ZooKeeper and Apache Cassandra.

Solr is a popular choice for organizations that need to search and analyze large amounts of data in real-time. It is widely used in many industries such as e-commerce, healthcare, finance, and security. It is also used by many content management systems to provide search functionality within their platforms.

SugarCRM

SugarCRM is a customer relationship management (CRM) system that helps businesses manage interactions with customers and sales prospects. It provides tools for sales automation, marketing automation, customer service, and collaboration. Some of the features it provides include contact and lead management, sales forecasting, and analytics, marketing campaign management, and customer service case management. SugarCRM is available in several versions including on-premise, cloud-based, and open-source. It is written in PHP and can be run on a variety of platforms, including Windows, Linux and macOS. It can be easily customized and integrated with other software and tools like email, calendar, and social media platforms.

Thunderbird

Thunderbird is a free and open-source email client developed by the Mozilla Foundation, the same organization that developed Firefox. It is available for Windows, Mac, and Linux operating systems. Thunderbird is designed to be a powerful and easy-to-use email client that allows users to manage multiple email accounts, calendars, and contacts in one place.

Thunderbird has a number of features that make it a powerful email client, including support for multiple email accounts, built-in spam filtering, and support for a wide range of email protocols such as IMAP, POP, and SMTP. It also includes a number of features to help users manage their email more efficiently, such as a powerful search function, message filtering, and the ability to sort and organize messages using tags and folders.

Thunderbird also includes support for add-ons, which are small programs that add additional functionality to the email client. This allows users to customize their email experience by adding features such as additional language support, productivity tools, and more.

Thunderbird is a popular choice for many users because it is free, open-source and provides a range of features that can make managing email more efficient. It also has a large and active community of users and developers who contribute to its development and support.

Tuleap

Tuleap is an open-source software development and project management platform. It provides a wide range of tools and features for managing software development projects, including issue tracking, document management, code reviews, and continuous integration. Tuleap also supports agile development methods such as Scrum and Kanban.

One of the key features of Tuleap is its flexibility, which allows it to adapt to the needs of different teams and organizations. It can be used for small projects as well as large, enterprise-level initiatives.

Tuleap also integrates with other popular tools and services such as Git, Jenkins, and Trello, which allows teams to work seamlessly across different tools and platforms.

It is written in PHP and uses MySQL as database. It runs on Linux and provide a web interface and an API.

Ubuntu

Ubuntu is a free and open-source operating system based on Linux. It is one of the most popular Linux distributions and is widely used for personal computers, servers, and in the cloud. Ubuntu is known for its user-friendly interface and ease of use. It is regularly updated and supported with security updates, bug fixes, and new features.

Ubuntu is designed to be easy to use, with a focus on usability and accessibility. It includes a wide range of software and tools, such as the Firefox web browser, LibreOffice office suite, and the Ubuntu Software Center for installing additional software. Ubuntu also has a large and active community that provides support, documentation, and a wide range of tutorials. It is available in several flavors like Ubuntu Desktop, Ubuntu Server, Ubuntu Core, Ubuntu Kylin, Ubuntu Studio and Ubuntu Budgie.

uPortal

uPortal is an open-source web portal software developed by the Apereo Foundation, a non-profit organization that provides support and resources for open-source software in education. uPortal is a framework for building customized portals for higher education institutions, allowing them to provide a personalized and integrated experience for students, faculty, and staff.

uPortal is built on top of Java and is designed to be highly customizable, allowing institutions to easily add new features and functionality, such as integrating with other systems, such as student information systems, library systems, and learning management systems. uPortal also provides a wide range of built-in features such as user and role management, content management, and search capabilities.

uPortal is also designed to be highly modular and extensible, allowing institutions to easily add new components, such as calendars, directories, and maps, and to integrate with other systems and applications. It also supports Single Sign-On (SSO) and it can be integrated with other identity management systems, such as Shibboleth and CAS.

uPortal is widely used by higher education institutions, particularly in the United States and Europe, as a way to provide a personalized and integrated experience for students, faculty, and staff. It is also gaining popularity among other organizations that need a personalized and integrated web portal.

Vaadin

Vaadin is a Java framework for building web applications. It provides a set of web components, a programming model, and a development environment for creating rich and responsive web applications. Vaadin allows developers to build web applications using Java, rather than JavaScript, making it easy for Java developers to create web applications with minimal web development experience.

Vaadin provides a set of pre-built web components, such as text fields, buttons, and grids, which can be easily integrated into web applications. It also provides a set of APIs for creating custom web components and integrating with other web technologies such as JavaScript and HTML.

Vaadin uses a server-centric architecture, where most of the application logic runs on the server, and the client-side code is generated automatically by the framework. This allows for a better separation of concerns and makes it easier to create web applications that work well on different devices and browsers.

Vaadin also provides a set of tools for developing, testing, and deploying web applications, such as a development environment, a testing framework, and a deployment tool. It also supports integration with other Java frameworks and libraries, such as Spring and Hibernate.

Vaadin is widely used by organizations and developers of all skill levels to create web applications that are rich in features and easy to maintain. It is also commonly used in enterprise-level web application development, where Java is a primary language.

Wireshark

Wireshark is a free and open-source network protocol analyzer. It is used to capture and analyze network traffic in order to troubleshoot and diagnose network issues, as well as for educational and research purposes.

Wireshark provides a graphical user interface that allows you to view and analyze network traffic in real-time or from a capture file. It can capture traffic from a variety of interfaces, including Ethernet, WiFi, and Bluetooth, and supports a wide range of network protocols.

Wireshark provides many powerful features to help you analyze network traffic, such as:

• Decoding and dissecting of various protocols, including TCP, UDP, HTTP, DNS, and many more
• Coloring rules and filters to help you quickly identify specific types of traffic
• Statistics and measurement tools to help you analyze network performance
• Ability to export data in various formats such as CSV, XML and JSON

Wireshark runs on various platforms like Windows, Linux, macOS and Unix. It can be run in command line mode as well as GUI mode.

WolfSSL

WolfSSL is an open-source SSL/TLS library that provides a lightweight and portable SSL/TLS library suitable for embedded systems and IoT devices. It aims to provide a secure and easy-to-use solution for embedded systems developers looking to add SSL/TLS support to their products.

wolfSSL supports a wide range of cryptographic algorithms and protocols such as AES, RSA, ECC, and SSL/TLS 1.3. It is also compatible with a variety of operating systems and platforms including Windows, Linux, and embedded systems such as FreeRTOS, VxWorks, and more.

In addition to its SSL/TLS library, wolfSSL also provides an embedded SSL/TLS server and client, as well as an embedded SSH library.

The library is written in C and is designed to be small and fast, making it a suitable option for embedded systems with limited resources.

XCP

XCP (Counterparty) is a blockchain-based platform that enables the creation and trading of user-generated assets, as well as the execution of smart contracts on the Bitcoin blockchain. XCP uses a protocol called the “Counterparty Protocol” which allows for the creation of new assets on the Bitcoin blockchain, and enables the use of smart contracts. The assets created on the XCP platform are called “Counterparty tokens” and can represent anything from virtual shares of a company to in-game items.

XCP also has a built-in decentralized exchange (DEX) that allows users to trade their assets without the need for a centralized intermediary. The XCP platform is open-source, and it uses a consensus mechanism called “Proof-of-Burn” which enables the creation of new XCP tokens by burning Bitcoin.

XCP was first released in 2014, and the development of the platform is still active. It uses the same blockchain technology as Bitcoin and is able to interact with it, this allows for the execution of smart contracts and the creation of new assets on the Bitcoin blockchain.

XMPP

XMPP (Extensible Messaging and Presence Protocol) is a free and open-standard, real-time communication protocol for message-oriented middleware based on XML (Extensible Markup Language). It is used for instant messaging (IM), presence information, and contact list maintenance. XMPP is designed to be extensible, allowing developers to add new features and functionality to the protocol.

XMPP uses a client-server architecture and is based on the publish-subscribe model, where clients subscribe to receive updates from other clients. The protocol includes support for a wide range of features, including instant messaging, presence information, and contact list management. It also includes support for end-to-end encryption, and it can be used for a wide range of applications beyond instant messaging, such as Internet of Things (IoT) communication, and real-time collaboration.

XMPP is supported by a wide range of clients, servers and libraries that are available for a variety of platforms, including Windows, Mac, Linux, iOS and Android. Some examples of XMPP clients are Pidgin, Gajim, and Conversations. It is also used by popular messaging apps such as WhatsApp and Facebook Messenger.

XMPP is a widely used protocol for real-time communication and it is known for its flexibility and extensibility, it is also popular among organizations that need real-time communication and collaboration features.

YottaDB

YottaDB is an open-source, high-performance NoSQL database management system that is optimized for high-speed transactions and real-time analytics. It’s built from the ground up to support high-performance, high-concurrency, and high-availability use cases.

YottaDB provides a number of features to support these use cases, including:

• Multi-threading, which allows it to handle many concurrent requests and transactions
• Multi-site replication, which allows for high-availability and disaster recovery
• Multi-data center replication, which allows for geographically distributed data centers
• Transactional semantics, which provide a consistent, isolated, and durable view of the data
• Support for various programming languages such as C, C++, Java, Python, Perl, and more.

YottaDB is also open-source and can be self-hosted. It runs on Linux, UNIX and Windows platforms.

It is designed for high-performance and high-concurrency use cases and is well suited for applications such as financial systems, healthcare systems, and telecommunications systems.

Zabbix

Zabbix is open-source monitoring software for networks and applications. It provides monitoring metrics, such as network utilization, CPU load, and disk space usage, as well as the ability to monitor the status of various network services and devices. Zabbix also supports alerting and notification capabilities, and can be integrated with other tools for visualization and reporting. Zabbix can monitor various services and system metrics on local and remote systems, and can be used to monitor a variety of platforms, including Linux, Windows, and macOS. Additionally, it supports a wide range of popular technologies, including SNMP, IPMI, JMX, IPMI, and more.

These directories make it easy for developers to find and use open source software, and for contributors to share and collaborate on projects.

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