🌐 Jekyll is a blog-aware static site generator in Ruby

Vagrant is a tool for building and distributing development environments.

Flexible authentication solution for Rails with Warden.

Acceptance test framework for web applications

Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.

A library for setting up Ruby objects as test data.

RailsAdmin is a Rails engine that provides an easy-to-use interface for managing your data

Manage Procfile-based applications

🎉 Makes http fun again!

Download an entire website from the Wayback Machine.

Cucumber for Ruby. It's amazing!

A Ruby interface to the Twitter API.

EventMachine: fast, simple event-processing library for Ruby programs

Ruby: parallel processing made simple and fast

A Ruby client library for Redis

The Official Ruby Object Mapper for MongoDB

JRuby, an implementation of Ruby on the JVM

Ruby: 2 CPUs = 2x Testing Speed for RSpec, Test::Unit and Cucumber

minitest provides a complete suite of testing facilities supporting TDD, BDD, mocking, and benchmarking.

Logic-less Ruby templates.

A high performance implementation of the Ruby programming language, built on GraalVM.

Ruby algorithms and data structures. C extensions

Large scale server deploys using BitTorrent and the BitTornado library (NOTE: project no longer maintained)

Goliath is a non-blocking Ruby web server framework

Ruby FFI

A platform for developing apps using JRuby on Android.

**Grit is no longer maintained. Check out libgit2/rugged.** Grit gives you object oriented read/write access to Git repositories via Ruby.

EventMachine based WebSocket server

A Ruby Object Mapper for Mongo

Magical Authentication