Another business actions architecture for Rails apps

Jazz theory is a mathematical system of concepts and relationships, why not make an ActiveModel representation of those concepts?

A user-centric flagging extension for Rails 3 applications.

Let ActiveRecord serialize and cast your UUIDs to and from binary columns in your database.

Loader to solve N+1 issue for good.

Store nested hashes and other types in ActiveRecord hstores

Off The Rails ActiveRecord: Use ActiveRecord with Grape, Sinatra, Rack, or anything else! Formerly known as 'grape-activerecord'.

An extension to paper_trail, using this you can fetch actual object who was responsible for this change

Adds the validates_uniqueness_without_deleted validator to ignore deleted fields when validating for uniqueness.

pg-eyeballs is a ruby gem that gives you detailed information about how the SQL queries created by the active record code you write are executed by the database. It gives you an easy, ruby friendly way to see the output of the Postgres EXPLAIN command and integrates with the popular query analysi...

Organize ActiveRecord model into a tree structure using PostgreSQL LTree

pluto-models - planet schema 'n' models for easy (re)use

PunchingBag is a hit counting and simple trending engine for Ruby on Rails

This library is an implementation of cursor pagination for ActiveRecord relations. Where a regular limit & offset pagination has issues with items that are being deleted from or added to the collection on previous pages, cursor pagination will continue to offer a stable set regardless of changes ...

Reportable allows for easy report generation from ActiveRecord models by the addition of the reportable method.

Rmre creates ActiveRecord models for legacy database with all constraints found.

Oauth and OpenID made dead simple

Provides an internal extension API to ActiveRecord, in the form of middleware-style callback stacks

Allows Sequel to use ActiveRecord connection for database interaction.

ActiveRecord extension. Allows to save record without calling callbacks and validations.