rails-social-share-button is one of the best rails helper gem to add social share feature in your Rails app. Such as Twitter, Facebook, Tumblr, Weibo, Douban, QQ...
MIT License
Facebook HTML5 style social plugins for Rails 3
A curated Rails application prototype that focuses on simple test patterns for Ruby & JavaScript!
Search Engine Optimization (SEO) for Ruby on Rails applications.
A demo of how to build a Dribbble clone using Ruby on Rails
link_to for specific actions
Clean and simple gem downloads count badge, courtesy of http://shields.io/. You can checkout the ...
Easy way for create featured contents using rails_admin
RailsAmp is a Ruby on Rails plugin for AMP(Accelerated Mobile Pages).