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

Heroku CLI

Next Generation Python Package Repository

Create React apps with no build configuration.

Asset Management for PHP

A multi-platform .NET UI framework

A Scala API for Cascading

MongoDB object modeling designed to work in an asynchronous environment.

The source code that powers readthedocs.org

🏊🏾 Simplified HTTP request client.

Etherpad: Really real-time collaborative document editing

Simple, Pythonic remote execution and deployment.

AWS SDK for Python

An extensible media player for Android

A collection of Android libraries to build browsers or browser-like applications.

Zcash - Internet Money

A tool to automatically fix PHP coding standards issues

The DokuWiki Open Source Wiki Engine

LaTeX plugin for Sublime Text 2 and 3

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.

A place to report bugs on websites.

Open source rich text editor based on HTML5 and the progressive-enhancement approach. Uses a sophisticated security concept and aims to generate fully valid HTML5 markup by preventing unmaintainable tag soups and inline styles.

A React-based UI toolkit for the web

Insanely easy way to work with Android Database.

Swagger 2.0 implementation for go

OpenToonz - An open-source full-featured 2D animation creation software

The Ember.js command line utility

Emmet support for Atom

Build amazing native and progressive web apps with open web technologies. One app running on everything 🎉

React components that implement Google's Material Design.

YugaByteDB is a high-performance, transactional database for building distributed cloud services. It currently supports Redis API (as a true DB), Cassandra API and SQL is coming very soon.

:gem: :ribbon: A boilerplate to setup and Practice Modern JavaScript

A framework for building native apps with React.

Brave browser for Desktop and Laptop computers running Windows, OSX, and Linux

☕️ simple, flexible, fun javascript test framework for node.js & the browser

A habit tracker app which treats your goals like a Role Playing Game.

Privacy Badger - Block third party tracking in your browser! By EFF

MGen: Windows PC C++ algorithmic music generator laboratory, playing into MIDI port and exporting MIDI

A free open source IT asset/license management system

Powerful and flexible web-based application builder

A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility

bottle.py is a fast and simple micro-framework for python web-applications.

Ember.js - A JavaScript framework for creating ambitious web applications

Dubbox now means Dubbo eXtensions, and it adds features like RESTful remoting, Kyro/FST serialization, etc to the Dubbo service framework.

awesome window manager

MNE : Magnetoencephalography (MEG) and Electroencephalography (EEG) in Python

K-9 Mail – Advanced Email for Android 📧

sbt, the interactive build tool

A PSP emulator for Android, Windows, Mac and Linux, written in C++. Want to contribute? Join us in #ppsspp on freenode (IRC) or just send pull requests / issues. For discussion use the forums on ppsspp.org.

Most popular Mocking framework for unit tests written in Java

Catch CSS curve balls.