Robokassa is payment system, that provides a single simple interface for payment systems popular in Russia. If you have customers in Russia you can use the gem. The first thing about this gem, is that it was oribinally designed for spree commerce. So keep it in mind.

This module aims to be a complete implementation of JSON-RPC 1.1 and 2.0.

RubiGen - Ruby Generator Framework

A simple to use, yet powerful Ruby framework for building console-based applications.

This is a Ruby API for Fitbit.com, currently scraping, but soon will use the officail API (when released)

ScheduleFu allows scheduling events with dates and times. It includes both the model and view portions of a calendar. It borrow heavily from acts_as_calendar (http://github.com/dball/acts_as_calendar) and calendar_helper (http://github.com/topfunky/calendar_helper).

SocialPoster is a gem that allows you easily post to different social networks.

Spree Redirects adds an interface for redirecting old url's to new ones.

Tiny IRC Bot Frameowkr

whmcs-ruby: Ruby bindings for the WHMCS API

This is taken from XMLCanonicalizer/WSS4R and http://github.com/borisnadion/xml-canonicalizer

Generic approval queues for record creation, updates and deletion

Access the Amazon API to order gift codes

A framework for distributing work for real-time services and offline tasks.

A simple to use Rails-Engine-Gem that offers an admin interface for trusted user. Easy integratable and highly configurable and agnostic. Works with ActiveRecord and Mongoid.

bio-ngs provides a framework for handling NGS data with BioRuby

Statsample-timeseries is an extension to Statsample. It incorporates helpful timeseries functions and modules like ARMA, ARIMA, acf, pacf, lags etc.

This bio-gem facilitates the creation of pretty, publication quality SVG images from feature data.

A ruby wrapper for version 3 of the bit.ly API Supports OAuth authentication

The blitline gems provides a simple easy wrapper to the Blitline.com web api