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

Flexible authentication solution for Rails with Warden.

The Ruby Programming Language

Classy web-development dressed in a DSL (official / canonical repo)

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.

Cron jobs in Ruby

Chef Infra, a powerful automation platform that transforms infrastructure into code automating how infrastructure is configured, deployed and managed across any environment, at any scale

OmniAuth is a flexible authentication system utilizing Rack middleware.

A runtime developer console and IRB alternative with powerful introspection capabilities.

Thor is a toolkit for building powerful command-line interfaces.

AASM - State machines for Ruby classes (plain Ruby, ActiveRecord, Mongoid, NoBrainer, Dynamoid)

Sequel: The Database Toolkit for Ruby

Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites

Manage your Ruby application's gem dependencies

📷 git-based selfies for software developers

Fast, Nimble PDF Writer for Ruby

Active Merchant is a simple payment abstraction library extracted from Shopify. The aim of the project is to feel natural to Ruby users and to abstract as many parts as possible away from the user …

The Ruby cloud services library.

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

Typhoeus wraps libcurl in order to make fast and reliable requests.

A Ruby client library for Redis

Actor-based concurrent object framework for Ruby

Adds support for creating state machines for attributes on any Ruby class

High performance memcached client for Ruby

Feature flippers.

Monitoring for today's infrastructure.

General Rack Authentication Framework

An awesome replacement for acts_as_nested_set and better_nested_set.

Preflight for HTML email