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

i3-compatible Wayland compositor

One webpage for every book ever published!

A scikit-learn compatible Python toolbox for machine learning with time series

Godot Engine official documentation

A query builder for PostgreSQL, MySQL and SQLite3, designed to be flexible, portable, and fun to use.

Build highly concurrent, distributed, and resilient message-driven applications on the JVM

Ruby on Rails

An easy-to-use multi SQL dialect ORM for Node.js

Web Experience Toolkit (WET): Open source code library for building innovative websites that are accessible, usable, interoperable, mobile-friendly and multilingual. This collaborative open source project is led by the Government of Canada.

Simple, fast, safe, compiled language for developing maintainable software. Supports translation from C and (soon) C++. Compiles itself in <1s.

AngularBellApp using couch 2.0. Part of OLE

Open source Slack-alternative in Golang and React - Mattermost

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

A high-level app and dashboarding solution for Python

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

Open source Slack-alternative in Golang and React - Mattermost

unix-like reverse engineering framework and commandline tools

A VIM-inspired filemanager for the console

Generation of diagram and flowchart from text in a similar manner as markdown

Ansible is a radically simple IT automation platform that makes your applications and systems easier to deploy. Avoid writing scripts or custom code to deploy and update your applications— automate in a language that approaches plain English, using SSH, w

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a comma

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing

coala provides a unified command-line interface for linting and fixing all your code, regardless of the programming languages you use.

Very spicy additions to the Java programming language.

♞ lichess.org: the forever free, adless and open source chess server ♞

♞ lichess.org: the forever free, adless and open source chess server ♞

One framework for creating powerful cross-platform games.

:tropical_fish: Babel is a compiler for writing next generation JavaScript.

Monorepo for tools developed by the Rush Stack community

vis.js is a dynamic, browser-based visualization library

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unl

Simple collaboration from your desktop

🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaScript extensions.

DeepSpeed is a deep learning optimization library that makes distributed training easy, efficient, and effective.

Chocolatey CLI

The Free Software Media System

:gem: A fast, open source text processor and publishing toolchain, written in Ruby, for converting AsciiDoc content to HTML 5, DocBook 5, and other formats.

A modern and intuitive terminal-based text editor

Extensible Dev Tools for Monorepos