Codex is a project mainly written in RUBY and JAVASCRIPT, it's free.
Personal Code Review
Useful Libs: git setup http://toolmantim.com/articles/setting_up_a_new_rails_app_with_git
gem sources -a http://gems.github.com
Spec sudo gem install rspec sudo gem install rspec-rails
config.gem "rspec", :lib => false, :version => ">= 1.2.0"
config.gem "rspec-rails", :lib => false, :version => ">= 1.2.0"
script/generate rspec
Shoulda sudo gem install thoughtbot-shoulda config.gem "thoughtbot-shoulda", :lib => "shoulda", :source => "http://gems.github.com"
Auth sudo gem install authlogic config.gem "authlogic" http://github.com/binarylogic/authlogic/tree/master
Haml (or Haml edge) sudo gem install haml config.gem "haml" OR sudo gem install haml-edge config.gem "haml-edge"
Compass sudo gem install chriseppstein-compass
Pagination sudo gem install mislav-will_paginate require "will_paginate" http://github.com/mislav/will_paginate/wikis/installation
Heroku sudo gem install heroku http://docs.heroku.com/