Live coding session at Rails Summit Latin America 2009, slides at:
A RuboCop extension focused on enforcing Rails best practices and coding conventions.
The code for the chat application of the tutorial "Creating a chat application with Rails and WebSockets"
Ruby on Rails code examples and launcher
Replaces your Rails controllers, views and forms with meta programming. Considers routes.rb, ability.rb, current_user and does the right thing. It's ruby on rails, on effective rails.
Adds some ruby / rails quality of life scripts.
Best way to learn Rails & Ruby
A community-driven Ruby on Rails style guide
a code metric tool for rails projects