Allow to store ActiveModel validations in ORM.

Contains validators for date and time values, type checking.

ActiveVersioning serializes attributes when records are saved and allows for version and draft management.

Simple, efficient, and extensible webhooks for Ruby, including: Rate Limits, Cryptographic Signatures, Asynchronous Delivery, Buffered Delivery, Versioning.

help to consume activity feeds of CIM

Activity Streams system by Fotonauts.

A simple engine to add addressable features to a domain object.

A ruby gem for active record which simplify the copy of very complex tree data.

Allows any model to be categorized.

LinkedIn Open Source type ahead tool's REST API as a ruby gem. Now with Reddis support.

This 'acts_as' extension provides the capability for having a default object. The class that has this specified needs to have a default column defined as an integer, string or boolean on the mapped database table

Adds GitHub-like search function to your models

Rails gem to allowing records to leave footprints

Rails gem to allowing models to be events for full calendar

ActsAsIndexable is a Rails engine that provides a configurable DSL for rendering tables in index views of your application. It works with any collection of enumerable objects, ActiveRecord or otherwise.

With ActsAsMentionable you can mention a different models in different contents.

Multipart forms using custom routes

Add notifications for ActiveRecord objects

Manages permalink columns in active record models. Strips special characters and spaces, creates before validation, assures uniqueness. That kind of thing.

This 'acts_as' extension provides the capability for having previous next methods for object. Previous & next are based on a specified column (default is id).