simple-login creates a basic and simple login system for Rails 3 apps. It is based on Railscasts Authentication from Scratch videos. Usage: create your rails app, then add this gem to your Gemfile. Finally, just type 'rails g simple-login'. All these routes are available: signup_path, login_path, logout_path, password_reset_path. Also, these methods are available: authorize and current_user. More info on github page.