Protect attributes from mass-assignment in ActiveRecord models.
Extracting DomAssertions and SelectorAssertions from ActionView.
Jbuilder: generate JSON objects with a Builder-style DSL
A virtual machine for Ruby on Rails core development
CoffeeScript adapter for the Rails asset pipeline. Also adds support for .coffee views.
Rack-based asset packaging system
Sprockets Rails integration
rubyonrails.org site anno 2015
Connects business objects and REST web services
Active Record's Session Store extracted from Rails
Brings back `assigns` and `assert_template` to your Rails tests
Ruby on Rails stylesheet engine for Sass
ActionView Record Tag Helpers
XML parameters parser for Action Pack (removed from core in Rails 4.0)