Cequel is an ActiveRecord-like domain model layer for Cassandra that exposes the robust data modeling capabilities of CQL3, including parent-child relationships via compound primary keys and in-memory atomic manipulation of collection columns.
Cequel migration support for Rails.
Integration for Devise with the Cequel Cassandra ORM
A state machine plugin on top of Cequel
ORM adapter for Cequel, the CQL3 ORM for Ruby