RBTree is a sorted associative collection that is implemented with Red-Black Tree. The elements of RBTree are ordered and its interface is the almost same as Hash, so simply you can consider RBTree sorted Hash.

This is a pure-ruby implementation of the rbtree gem.

Simple utility to pull image urls from web page

One Rake task to give you rcov code coverage for your rails app. rake test:coverage

RestClient with embedded cert

Makes it easy to use the HubSpot API in a Ruby application.

Rixi is a simply library for mixi graph api in Ruby.

An RDIO client/server plugin for Robut

Simple JSON HTTP RPC generator for as3

ruby-ogginfo gives you access to low level information on ogg files (bitrate, length, samplerate, encoder, etc... ), as well as tag. Supported codecs are: vorbis, speex and opus. It is written in pure ruby.

Gem to provide basic access to PostcodeAnywhere services

Ruby-VPI is a Ruby interface to IEEE 1364-2005 Verilog VPI and a platform for unit testing, rapid prototyping, and systems integration of Verilog modules through Ruby. It lets you create complex Verilog test benches easily and wholly in Ruby.

Rumbster is a simple SMTP server that receives email sent from a SMTP client. Received emails are published to observers that have registered with Rumbster. There are currently two observers; FileMailObserver and MailMessageObserver.

An automatic logger for HTTP requests in Ruby, supporting the Net::HTTP and HTTPClient client libraries.

This gem allows you to access data from http://sc2ranks.com

More on Sensis search api http://developers.sensis.com.au/

A Hadoop Hive adapter for Sequel. Uses RBHive and Thrift.

This Sinatra extension, derived from omniauth_pure by Marcus Proske, adds OmniAuth authorization to your Sinatra application, so your users can login using FaceBook, Twitter and many other authorization providers, as long as you supply the API keys. It uses DataMapper and HAML.

Site24x7 APMInsight gives you end-to-end web-transaction awareness of Rails applications enabling you to isolate performance issues and resolve them quickly. To monitor Rails application performance, download and deploy Ruby agent(site24x7_apminsight) in your Application Server. This agent allows you to send information about Ruby applications. You can install APM Insight Agent via Rubygems or download it from your user account in Site24x7

Spore is a specification for describing ReST API that can be parsed and used automatically by client implementations to communicate with the descibed API