Rocket Pants adds JSON API love to Rails and ActionController, making it simpler to build API-oriented controllers.

Full HMAC auth implementation for use in your gems and Rails apps.

Parameter Validation and Type Coercion for Rails

Deliver assets for Rails.

A drop-in replacement for e.g. MemCacheStore to store Rails sessions (and Rails sessions only) in Redis. For great glory!

Client library for the Central Authentication Service (CAS) protocol.

A Rails engine for queuing and managing maintenance tasks

Easily switch current user to speed up development

APN on Rails is a Ruby on Rails gem that allows you to easily add Apple Push Notification (iPhone) support to your Rails application.

Formtastic form builder to generate Twitter Bootstrap-friendly markup.

APN on Rails is a Ruby on Rails gem that allows you to easily add Apple Push Notification (iPhone) support to your Rails application.

Bh - Bootstrap Helpers

Don’t fool around with adding tracking partials to your app and concentrate on the things that matter.

Offsite Payments is a simple abstraction library used in and sponsored by Shopify. It is written by Tobias Luetke, Cody Fauser, and contributors. The aim of the project is to put as simple an abstraction as possible on top of offsite (often called hosted) payment pages, and allow contributors to easily help services such as Shopify extend the number of offsite payment services they support.

Interact with REST services in an ActiveRecord-like manner

Out-of-Band Server Triggered DOM Operations

A library to make creating negative captchas less painful

Rails performance tests (removed from core in Rails 4.0)

Library for building Telegram Bots with Rails integration

Configurable, but assumes a conservative strategy by default with a goal to solve many search engine index problems: multiple hostnames, inbound links with arbitrary parameters, trailing slashes.