korch (Rodney K)

The File System State Monitor keeps track of the state of any number of paths and will fire events when said state changes (create/update/delete). Currently, FSSM supports using FSEvents on MacOS and polling anywhere else. Support for inotify on linux is planned.

Adds in proccess id and memory usage in your rails logs, great for tracking down memory leaks

Debugging toolbar for Rack applications implemented as middleware

evented I/O for v8 javascript

Adds support for creating state machines for attributes on any Ruby class

Color Tools and Theme Support for Compass and Sass

Nginx module implementing an upload progress system, that monitors RFC1867 POST uploads as they are transmitted to upstream servers.

Use AJAX Upload to upload multiple files without refreshing the page and style upload button as you wish.

jQuery Form Plugin

Rails plugin for easy embedding swf upload into your project

A lightweight calendar widget for the Prototype JavaScript framework.

Pushup

General collection of useful JavaScript tools

Subscription management and processing (TrustCommerce, BrainTree, etc.)

Syntax checking hacks for vim

Automatically detect mobile requests from mobile devices in your Rails application.

Rack middleware replacement for mod_rewrite

Sailing the Waves of Google with Ruby

Browse and Manage your data using browser

A rails plugin/gem to kill N+1 queries and unused eager loading

Rails plugin that maps model validations to class names on form elements to integrate with Validatious

Flexible authentication solution for Rails with Warden

Facebook style Prototype Multi select (multiselect) Box

explore and visualize performance data from Rails log files

Flexible Formtastic styling with Sass

Takes blocks of html content and animates between them using normal #anchor links

ltrace intercepts and records dynamic library calls which are called by an executed process and the signals received by that process. It can also intercept and print the system calls executed by the program.

Active Merchant is a simple payment 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 feel natural to Ruby users and to abstract as many parts as possible away from the user to offer a consistent interface across all supported gateways.

Spree is a complete open source e-commerce solution for Ruby on Rails.

Moving the HighLine source from RubyForge

Implement the Baseline CSS framework in Sass

ruby binding to maxmind geoip library

Dynamic, framework-neutral metadata describing path/URI structures, with natural translations to/from JSON, YAML and XML. Bonus features: easy Rails integration and a plain text report format!