Cake (C# Make) is a cross platform build automation system. http://cakebuild.net/

Main repository for GoCD - Continuous Delivery server https://go.cd

The Crystal Programming Language http://crystal-lang.org

:page_with_curl: A JavaScript parser https://babeljs.io/

Realtime MVC Framework for Node.js http://sailsjs.org

Javascript Canvas Library, SVG-to-Canvas (& canvas-to-SVG) Parser http://fabricjs.com

Ember.js - A JavaScript framework for creating ambitious web applications http://www.emberjs.com

The Reactive Extensions for JavaScript http://reactivex.io

An open source code editor for the web, written in JavaScript, HTML and CSS. http://brackets.io

Node.js JavaScript runtime :sparkles::turtle::rocket::sparkles: https://nodejs.org

Level up your programming skills. Want to contribute? Read this: https://github.com/exercism/exercism.io#contributing-to-exercism http://exercism.io

:tropical_fish: Babel is a compiler for writing next generation JavaScript. https://babeljs.io/

The most advanced responsive front-end framework in the world. Quickly create prototypes and production code for sites that work on any kind of device. http://foundation.zurb.com

Kitto is a framework for interactive dashboards written in Elixir http://kitto.io/dashboards/sample

Manage your application's gem dependencies with less pain http://bundler.io

Real-time Audio Feature Extraction for the Web Audio API http://hughrawlinson.github.io/meyda/

An active model wrapper for the Neo4j Graph Database for Ruby. http://neo4jrb.io

Ruby enVironment (Version) Manager ( rvm ) ~ Monitor GitHub Issues ( https://github.com/rvm/rvm/issues/ ) for bug reports and fixes. Fundraiser for mpapis: https://www.bountysource.com/fundraisers... https://rvm.io/

Jekyll is a blog-aware, static site generator in Ruby http://jekyllrb.com

The Cocoa Dependency Manager. http://cocoapods.org

A ruby client for the Salesforce REST api.

Metasploit Framework http://www.metasploit.com/

:books: The Open Source Discovery Service https://libraries.io

An adapter-based ORM for Node.js with support for mysql, mongo, postgres, redis, and more

Futuristic test runner :rocket:

A Ruby web framework where your Ruby runs on both server and client

:+1: Find open source project that are friendly and welcoming https://contribulator.herokuapp.com/

Have your own Slack like online chat, built with Meteor. https://rocket.chat/

Monitor for any changes in your node.js application and automatically restart the server - perfect for development http://nodemon.io/

REST API for any Postgres database http://postgrest.com