rZotero provides a simple and extensible library for working with the Zotero API

sabredav_client is a great Ruby client for SabreDAV servers. It is based on the agcaldav gem.

Ruby library for working with Samba Videos data API

Sape.ru links exchange system integration

Heavy metal Ruby SOAP client library

A Ruby DSL for building SAX parsers.

Run tests using SciroccoCloud's mobile devices.

utility to chop sound files

A library for interacting with Scout (http://scoutapp.com), a hosted server monitoring service. Query for metric data, manage servers, and more.

Reports app performance metrics gathered via Scout to SignalFx

Simple tool for pushing cucumber features into Rally testcases

Scrapbooker is a gem for rails that allows you to pull information from social media feeds then store the information locally.

Contains classes to archive and retrieve digital object version content and metadata

Client for the SentimentAnalysis API

riak-client is a rich client for Riak, the distributed database by Basho. It supports the full HTTP interface including storage operations, bucket configuration, link-walking and map-reduce.

API wrapper for Server Density

A simple gem to track the current status of London Underground services, it polls the TFL endpoint and will alert you if there is an issue, also provides a nice interface to TFL's tube data, still very beta, please give me a poke on github with suggestions and enhancements.

Simple wrapper class generator for consuming RESTful web services

This gem sends sms via SMSGlobal's http api

Provides an interface to get shipping rates and transit time for Fedex, UPS, and USPS