- postgresql-async 856 Async, Netty based, database drivers for PostgreSQL and MySQL written in Scala
- master_slave_adapter 102 An ActiveRecord database adapter that allows you to setup a "master/slave" environment
- resque_action_mailer_backend 29 Use Resque to enqueue and send your emails
- collective_intelligence_examples 16 Examples from the Collective Intelligence book
- sample_social_network 16 This is a sample project to test and experiment new ideas.