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

Ruby in the Browser

Official Sass port of Bootstrap 2 and 3.

Rust Code Completion utility

A lightweight, fast and extensible game server for Minecraft

Collection of RSpec/MiniTest matchers and Cucumber steps for testing email in a ruby app using ActionMailer or Pony

Core of ABF

Riak + Solr

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

Distributed scheduled job

Insanely easy way to work with Android Database.

Unfancy JavaScript

Websauna is a full stack Python web framework for building web services and back offices with admin interface and sign up process

:bar_chart: A D3-based reusable chart library

Streetmix makes it easy for people to design public spaces together.

A really simple way for developers to add "Social Authentication" to their ASP.NET web application

Zcash - Internet Money

Keep your application settings in sync (OS X/Linux)

QT Application for Public transportation

:rocket: 🌪 Super-fast 3D framework for Web Applications 🥇 & Games 🎮. Based on Three.js

phpreboot website

BNF Converter

Next-generation ES module bundler

LaraAdmin is a Open source Laravel Admin Panel / CMS which can be used as Admin Backend, Data Management Tool or CRM boilerplate for Laravel with features like Advanced CRUD Generation, Module Manager, Backups and many more.

A place to report bugs on websites.

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

Bears for coala

GitScrum is a Project Management Tool, developed to help entrepreneurs, freelancers, managers, and teams Skyrocket their Productivity with the Agile methodology and Gamification.

:postbox: Take back control of your GitHub Notifications

An alternative tibia client for otserv written in C++11 and Lua, made with a modular system that uses lua scripts for ingame interface and functionality, making otclient flexible and easy to customize

{{range-slider}} component for ember-cli powered by noUiSlider

An analyzer library for C# and VB that uses Roslyn to produce refactorings, code analysis, and other niceties.

The motion graphics toolbelt for the web

React carousel component

The official Semantic-UI-React integration

Git History for Visual Studio Code

A Java client library and an Android app to access more than 1,000 public and scientific libraries from all over the world.

DEPRECATED: Javascript libraries packaged up with Google Closure externs

:star: Vim for Visual Studio Code

Stack Exchange's Monitoring System

The Open Event Organizer Server to Manage Events https://test-api.eventyay.com

A Crystal web framework that makes building applications fast, simple, and enjoyable. Get started with quick prototyping, less bugs, and blazing fast performance.

Jupyter Interactive Notebook

Easily make RESTful web services for time series reporting with Big Data analytics engines like Druid and SQL Databases.

Universal Mailer plugin for Mail.app

:star: A Ruby Gem that wraps the functionality of jQuery Raty library, and provides optional IMDB style rating.

A tool to enforce Swift style and conventions.

Combines the high accuracy of AR with the scale of GPS data.

A simple, Git-powered wiki with a sweet API and local frontend.