- rails/rails 31,768 Ruby on Rails
- plataformatec/devise 15,382 Flexible authentication solution for Rails with Warden.
- HubSpot/offline 6,985 Automatically display online/offline indication to your users. #hubspot-open-source
- justinfrench/formtastic 4,873 A Rails form builder plugin with semantically rich and accessible markup.
- svenfuchs/rails-i18n 2,753 Repository for collecting Locale data for Ruby on Rails I18n as well as other interesting, Rails related I18n stuff