ClosureTree/closure_tree

Recursive Laravel Eloquent relationships with CTEs

Utilities for implementing a modified pre-order traversal tree in django.

Generate Entity-Relationship Diagrams for Rails applications

🃏🗑 Soft deletes for ActiveRecord done right

Versioned database views for Rails

Track changes to your rails models

Audited (formerly acts_as_audited) is an ORM extension that logs all changes to your Rails models.

pg_search builds ActiveRecord named scopes that take advantage of PostgreSQL’s full text search

Rails I18n de-facto standard library for ActiveRecord model/data translation.