Ruby Bookmarks. This is a curated collection of essential Ruby and Ruby on Rails resources. The project aims to maintain a well-structured reference equally useful both for beginners and advanced web developers. ★ stands here for Editors' Choice. This list is not intended to include any random resource related to Ruby programming (we already have a most complete gem catalogue at ruby-toolbox.com and Awesome Ruby), but only the best and most actual alternatives in each area.