Help out your favorite open source projects and become a better developer while doing it.

Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.

3D plotting and mesh analysis through a streamlined interface for the Visualization Toolkit (VTK)

Netty project - an event-driven asynchronous network application framework

The official repository for the AiiDA code

A system-level, binary package and environment manager running on all major operating systems and platforms.

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

An entity framework for Go

Scrapy, a fast high-level web crawling & scraping framework for Python.

Pygments is a generic syntax highlighter written in Python

🔐 JSON Web Token Authentication for Laravel & Lumen

Postgresql JDBC Driver

An extensible multilanguage static code analyzer.

📝 Minimalistic Vue-powered static site generator

Next-generation ES module bundler

The Ruby Programming Language

:video_game: GDevelop is an open-source, cross-platform game engine designed to be used by everyone.

DNS over HTTPS / DNS over Tor / DNSCrypt client, WireGuard proxifier, firewall, and connection tracker for Android.

Adds static typing to JavaScript to improve developer productivity and code quality.

:zap: A Fast, Extensible Progress Bar for Python and CLI

The zero configuration build tool for the web. 📦🚀

Free and open-source social network for active citizenship.

A collection of libraries and tools that help you build adaptive, accessible, and robust user experiences.

persist and rehydrate a redux store

Build resilient language agents as graphs.

A Minimalistic Wrapper for IndexedDB

GNU Radio – the Free and Open Software Radio Ecosystem

The Free Software Media System

Metasploit Framework

Java DSL for easy testing of REST services

The Racket repository

The Racket repository

Realtime MVC Framework for Node.js

Yosys Open SYnthesis Suite

The Python Package Index

a collaborative knowledge-exchange platform in Rails; we welcome first-time contributors! :balloon:

The Twitch Enhancement Suite. Get custom emotes and tons of new features you'll never want to go without.

A Git-based CMS for Static Site Generators

Point Cloud Library (PCL)

⚡️ The Jamstack framework for Vue.js

🚀 10x easier, 🚀 140x lower storage cost, 🚀 high performance, 🚀 petabyte scale - Elasticsearch/Splunk/Datadog alternative for 🚀 (logs, metrics, traces, RUM, Error tracking, Session replay).

A lightweight, fast and extensible game server for Minecraft

A lightweight, fast and extensible game server for Minecraft

Warzone 2100 - a free and open source real time strategy game.

Catch CSS curve balls.

Single-cell analysis in Python. Scales to >1M cells.

A SwiftUI Mastodon client

Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it.

Java libraries for writing microservices

Staticcheck - The advanced Go linter