ActiveRecord extension for sorted adjacency lists support

Integrates Paperclip as a field for Administrate in Rails apps

CheddarGetter API Client in Ruby

Opinionated Rails library for writing RESTful APIs

Daengine handles digital asset processing.

An earth-simulation environment with ActiveRecord models and data

Because Blogojevich would be too tough to remember. It's a pluggable blogging system for Rails 3.

A wrapper for konduto antifraud API

Light pattern Decorator for Rails from Light Ruby

Ruby library for integrating with the 42Floors MLS

Provides access to the Nike+ V2 Api

Nike+ API V2 Gem

A Rails Engine that enables you to easily wire up a Rails app to an existing Wordpress database

Clearance-based Rails engine for Software as a Service (Saas) that provides account and project management

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).

Social Stream is a Ruby on Rails engine providing your application with social networking features and activity streams. This gem packages the basic functionality, along with basic actors (user, group) and activity objects (post and comments)

Adds comments to the solidus admin

BitPay connector for the Spree shopping cart

Simple contact form manager for Spree

A Spree calculator to calculate fixed adjustments based on ranges. For example, **free shipping above $100, and $4.39 for all orders under $100**, would mean a range *from 0 to $99.99*, that *has a fixed shipping rate of $4.39*.