Ruby on Rails

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

Cross-platform Rust rewrite of the GNU coreutils

Fast math typesetting for the web.

GoReplay is an open-source tool for capturing and replaying live HTTP traffic into a test environment in order to continuously test your system with real data. It can be used to increase confidence…

A customizable life embetterment robot.

An extensive math library for JavaScript and Node.js

A deployment automation tool built on Ruby, Rake, and SSH.

Acceptance test framework for web applications

A free & open modern, fast email client with user-friendly encryption and privacy features

Free continuous integration platform for GitHub projects.

A window management application (replacement for Divvy/SizeUp/ShiftIt)

🔬 A Ruby library for carefully refactoring critical paths.

Catches mail and serves it through a dream.

🗂 High resolution web browser logos

Record your test suite's HTTP interactions and replay them during future test runs for fast, deterministic, accurate tests.

Encoding and decoding images in Rust

Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape.

A command-line power tool for Twitter.

Decorators/View-Models for Rails Applications

Cucumber for Ruby. It's amazing!

Rails for API only applications

Visual/CSS regression testing with PhantomJS

A Ruby interface to the Twitter API.

Rhino is an open-source implementation of JavaScript written entirely in Java

Library for stubbing and setting expectations on HTTP requests in Ruby.

The Official Ruby Object Mapper for MongoDB

Game written in Ruby for learning Ruby.

A set of exercises for learning Clojure

Free Lossless Image Format