Track changes to your models, for auditing or versioning. See how a model looked at any stage in its lifecycle, revert it to any version, or restore it after it has been destroyed.

Log all changes to your models

PostgreSQL JSONB-based model changes tracking

Keep a DRY history of your ActiveRecord models' changes

Add simple versioning to ActiveRecord models.

Dead simple snapshot versioning for ActiveRecord models and associations.

version_fu helps version your ActiveRecord models. It is based on Rick Olson's acts_as_versioned and is compatible with Rails 3.

acts_as_revisable enables revision tracking, querying, reverting and branching of ActiveRecord models. Inspired by acts_as_versioned.

Provides a straightforward way for auditing changes on active record models, especially for composite entities. Also provides helper methods for easily rendering an audit trail in Ruby on Rails views.

A simple gem that audit ActiveRecord models' attributes or methods by taking snapshots and diff them for you. Starting from scratch to work with Rails 3.2.2 onwards

Allows for your ActiveRecord models to have drafts which are stored in a separate duplicate table.

ActiveRecord extension that provides revision support so that history can be tracked and changes can be reverted. Emphasis for this plugin versus similar ones is including associations, saving on storage, and extensibility of the model.

A simple, yet flexible solution to tracking changes made to objects in your database.

Rails model versioning with the power of uni-temporal inherited tables

Generic approval queues for record creation and updates

ActiveRecord versioning

SimplyVersioned is a simple, non-invasive, approach to versioning ActiveRecord models.

Rewrite of the original historical-plugin using MongoDB

A zero-configuration RESTful ActiveRecord server.