Social Stream is a Ruby on Rails engine for building social network websites. It supports contacts, posts, file uploads, private messages and much more.

Social Stream Presence provides everything you need for including presence, instant messaging and video chat services in your social network website, including a complete chat fully integrated with Social Stream.

Log parser to identify actions which significantly increase VM heap size

Combine 'pry' with 'debugger'. Adds 'step', 'next', and 'continue' commands to control execution.

Specjour splits your RSpec suite across multiple machines, and multiple cores per machine, to run super-parallel-fast! Also works with Cucumber.

Use compiled hogan.js (mustache) JavaScript templates with sprockets and the Rails asset pipeline.

A smart api explorer for a rails app

A Rails engine that allows any model to act as avatarable, permitting it to have a complete avatar manager

A Ruby DSL for printing guitar chords diagrams

Spree Minicart allows customer to add/remove an item from their cart without ever leaving the page they're on.Let your customers preview their cart before they start the checkout process.

Diffbench is gem designed to benchmark the performance patches. It can run specified benchmark file before and after some changes made and show performance comparation result

A command line utility for playing sounds in response to log lines.

link_to for specific actions

淘宝开放平台ruby版，支持Rails3+

Extend Rails Engine's business logic (models, controllers, helpers, etc.) easily from your application or other engine.

A client for the unofficial Vine API.

Sinatra-soap gem makes task to create SOAP API really simple. Inspired by WashOut gem for Rails. But remember, the only reason why you should use SOAP is legacy code.

Thor tasks to manage a VERSION file based on SCM tags

Ruby implementation for Walmart Open API.

A ruby gem to handle multiple user roles on a Rails app, it also has Devise support