rdoc via Apple's Dictionary.app. Automatically builds and installs an Apple Dictionary with all rdoc nicely formatted. Inspired by: http://priithaamer.com/blog/ruby-on-rails-dictionary-for-macosx

A TAGS file generator that builds both vim and emacs style tags files. Vim tags are based on http://ctags.sourceforge.net/FORMAT). rdoc-tags is compatible with Exuberant Ctags for merging tag definitions. rdoc-tags includes a Hoe plugin +:rdoc_tags+ making it easy to add tag support to your ruby project. If you don't use Hoe you can instead use RDoc::TagsTask to add rake tasks for building TAGS to your ruby project.

Get rates and tracking info from various shipping carriers. A fork of Shopify's original ActiveShipping gem.

A library to convert names between different naming conventions.

Package indexer for git-based ReaPack repositories

A collection of helpful methods and monkey patches for Objects, Strings, Enumerables, Arrays, Hash, Dates, Minitest & Rails

A collection of helpful methods and monkey patches for Rails

rails middleware to reconnect connection

A simple dynamic-sized redis connection pool.

Redis backed store for i18n

Redis analytics with tracks (using bitmaps) and counts (using buckets)encoding numbers in Redis keys and values.

A collection of finance algorithms related to annuities.

If you want to receive or send message via RELP protocol you can use this gem

EventMachine Mail Agent for SMTP and IMAP

Spaced repetition algorithm module that can be used as a mixin in Ruby apps

Replay supports event-sourced data models.

Rails gem for Replicate

In Ruby 1.9.2, "." was removed from $:. This is a good idea, for security reasons. This gem backports this to Ruby 1.8.

Requisite is an elegant way of strongly defining request and response models for serialization

This gem patches the Resolv::DNS class in stdlib to include a method to resolve and iterate over SRV records according to their relative priorities and weights.