You can do irb anywhere by calling 'ir b' (need a whitespace!).

Ivy4r is a Ruby interface for Apache Ivy dependency management library. Offers support for using Ivy with Buildr and Rake.

kaminari-mongo_mapper lets your MongoMapper models be paginatable

Kaminari is a Scope & Engine based, clean, powerful, agnostic, customizable and sophisticated paginator for Rails 3+

A Rspec Helper library for the Kaminari gem

A collection of scripts for common git tasks to simplify and improve workflow.

Cloud Foundry automation via manifest documents.

Massimo builds HTML, Javascript, and CSS Files from your source.

A Ruby mailing list library designed to be integrated into other applications.

A gem that calculates the exchange rate using published rates from openexchangerates.org. Compatible with the money gem.

Distributed locking with memcached.

Client library and command-line tool to interact with the Mortar service.

This gem reads exchange rates from the National Bank of the Republic of Belarus website. It uses it to calculates exchange rates. It is compatible with the money gem

A Ruby implementation of OpenXmlPackage from Microsoft's Open XML SDK

Pathological provides a way to manage a project's require paths by using a small config file that indicates all directories to include in the load path.

This gem provides all necessary tools to make a Rails application into a platform with third party applications.

Detects profane words using multiple strategies, including similarities, diacritics(sound alterations), constructions (multi-part), injections and unicode.

Background jobs on RabbitMQ

Rack middleware for handling large file uploads. Integrates nicely with the Nginx upload module: http://www.grid.net.ru/nginx/upload.en.html

resque-exceptional provides a Resque failure backend that sends exceptions raised by jobs to getexceptional.com.