Red Colors provides a wide array of features for dealing with colors. This includes conversion between colorspaces, desaturation, and parsing colors.

A reentrant/recursive flock.

RIMS is Ruby IMap Server. This gem provides a complete IMAP server by itself. The IMAP server can run as a daemon, mailboxes are provided and messages can be delivered to them.

A Ruby SDK for the RingCentral Connect Platform API

The rkerberos library is an interface for the Kerberos 5 network authentication protocol. It wraps the Kerberos C API.

Image/Flash extract width/height dimensions extractor

newest Binding for wxWidgets 3.0+, it was made after wxRuby died.

Puppetlabs testing tool coupled with Beaker

ScottKit is a toolkit for compiling, decompiling and playing adventure games in the Scott Adams format.

A Shogi library by pure Ruby. It supports CSA format.

Auto-instrumentation framework for Ruby

JSONP output helper for Sinatra

Basic Pulp support for Foreman Smart-Proxy

SocialPoster is a gem that allows you easily post to different social networks.

Splunk SDK for Ruby

A Ruby wrapper for the Dribbble API

Hash wrapper.

tb is a manipulation tool for tables. tb provides a command and a library for manipulating tables: Unix filter like operations (sort, cat, cut, ls, etc.), SQL like operations (join, group, etc.), other table operations (search, gsub, rename, cross, melt, unmelt, etc.), information extractions (g...

test-unit-capybara is a Capybara adapter for test-unit 2. You can get [Capybara](https://rubygems.org/gems/capybara) integrated Test::Unit::TestCase. It also provides useful assertions for Capybara.

Rails supports Minitest but doesn't support test-unit.