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HLS.js is a JavaScript library that plays HLS in browsers with support for MSE.
Formats & syntax highlights JSON viewed inside of the web browser using the ACE editor!
Replaces references in HTML to JavaScript and CSS files with their revv'd version.
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
A component-based, event-driven JavaScript framework from Twitter
Haml templates where you can write inline CoffeeScript.
The best Rails 3 and Rails 4 forum engine. Ever.
Extensions to Prototype to aid in writing unobstrusive JavaScript
Active Merchant is a simple payment abstraction library extracted from Shopify. The aim of the project is to feel natural to Ruby users and to abstract as many parts as possible away from the user …
Globalize is a Ruby on Rails plugin designed to support multilingual applications (official repository).
Easy charting library for Ruby with multiple backends
script.aculo.us is an open-source JavaScript framework for visual effects and interface behaviours.
A Gitk-like application written in RubyCocoa that looks like it belongs on a Mac. See the wiki for downloads and screenshots.
Ruby on Rails TextMate bundle [Learn it with PeepCode - http://peepcode.com/products/textmate-for-rails-2]
Treat an ActiveRecord model as a file attachment, storing its patch, size, content type, etc.