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

Better error page for Rack apps

Slim is a template language whose goal is to reduce the syntax to the essential parts without becoming cryptic.

A modular Ruby web server interface.

Sequel: The Database Toolkit for Ruby

The open source error catcher that's Airbrake API compliant

JRuby, an implementation of Ruby on the JVM

RSpec tests for your servers configured by CFEngine, Puppet, Chef, Ansible, Itamae or anything else even by hand

Automated code reviews via mutation testing - semantic code coverage.

Generic interface to multiple Ruby template engines

The Official MongoDB Ruby Driver

a unified interface to key/value stores

Nyan Cat inspired RSpec formatter!

a plugin for vagrant that allows you manage a sandbox state

Librarian - A Framework for Bundlers. Librarian-Chef is at: https://github.com/applicationsonline/librarian-chef.

Simple, easy-run, fast-start in-memory Chef server for testing and solo purposes

Template compilation framework in Ruby

A tool for building software packages with fpm.

A Ruby Statsd client that isn't a direct port of the Python example code. Because Ruby isn't Python.

A library to handle IPv4 and IPv6 addresses in a modern and productive way.

Create immutable objects

A Test Kitchen Driver for Vagrant

Turn Ruby AST into semantically equivalent Ruby source

Date/time and number parsing for Rails.

Profile Ruby code and find out exactly how slow it runs.

A structured logger for Fluentd (Ruby)

Advocating idleness and work-shyness

bundler support for jars for jruby

A URI template library for ruby.