Accessitude

Use the policy pattern to define access control mechanisms in Rails. Store user-level, group-level, or org-level permission on any given record or concept in the database with ultra-fast lookups.

Access token for client-side and API authentication.

Account Scopper: Automatically scope your ActiveRecord's model by account. Ideal for multi-account applications.

Provides enhancements to ActiveRecord to handle spatial datatypes in PostgreSQL and MySQL.

An adapter for Rails::ActiveRecord ORM to the KirbyBase pure-ruby DBMS

a-blog cms をrubyで操作したい

A DSL for seed.rb

Friendly cache with ActiveRecord.

Active Record plugin which allows you to disable and enable the record by adding act_as_disabled in model

Helps import records from CSV files.

Add full name methods on a model

Library (Docsplit wrapper) for text extraction from pdf, doc/x, txt files with OpenOffice

Make your models work with a release candidate that must be approved

Add time_as_boolean feature to ActiveRecord classes

Simple implementation of command pattern focused on reuse in multiple contexts

ActionController is great, but could be better. Here are some tweaks for it.

The Mosaico email editor on Rails.

Simple and lightweight paginator for collections (Array, ActiveRecord::Relation etc.)

action_processor