iDEAL payment gateway (see http://www.ideal.nl and http://www.activemerchant.org/)

InheritedViews brings the DRY principle to the controller and view layers within Rails applications

Autolink emails for your Jekyll site.

Security Group configuration tool for OpenStack. You can apply simple YAML definition into Security Group on OpenStack.

Library to access and manipulate Kafka metadata in Zookeeper

A simple Ruby client for the leancloud.cn REST API

An ActiveSupport cache store that uses the C-based libmemcached client through Evan Weaver's Ruby/SWIG wrapper, memcached. libmemcached is fast, lightweight, and supports consistent hashing, non-blocking IO, and graceful server failover.

librarian-puppet-maestrodev gem is now deprecated in favor of librarian-puppet 0.9.11 and is no longer updated

Instrument Rails and Resque with shared transaction IDs so that you trace execution across instances.

An implementation of LSH in Ruby, using JBLAS for JRuby and GSL for MRI

This provides Ruby access to (eventually) all of Mailchimp's APIs

A library for treating nil and non-nil objects in a similar manner. Technically speaking, Maybe is an implemenation of the maybe monad. The Maybe class wraps any value (nil or non-nil) and lets you treat it as non-nil.

Simple key/value mocked storage system

Smoggy Azure API

Rake tasks for Rails that add groups to migrations

A simple Ruby interface for Git

Colorize MiniTest output and show failing tests instantly

I like MiniTest. I like VCR. I like not having to manage cassetes.

Ruby library for integrating with the 42Floors MLS

Rails enhancements for rendering different content for different device types