- has_threaded_comments 84 Add an entire threaded comment system to your Rails application with only 7 lines of code.
- mini-smtp-server 80 A tiny and highly customizable SMTP server.
- flea 78 Flea is a tiny Lisp interpreter written in Ruby
- koi 76 Koi is a small programming language designed to teach the basics of language implementation. [ALPHA]
- ruby-tmdb 66 [DEPRECATED] An ActiveRecord-style API wrapper for TheMovieDB.org