brendon/ranked-model

Simple positioning for Active Record models.

Acts as list mongoid implementation

Easily and efficiently make your ActiveRecord models support hierarchies

Enables easily adding filtering in rails controllers

Nearest neighbor search for Rails

A transparent sorted ManyToMany field for django.

Catch unsafe PostgreSQL migrations in development and run them easier in production (code helpers for table/column renaming, changing column type, adding columns with default, background migrations, etc).

Versioned database views for Rails