Rails gem that provides Net Promoter Score (NPS) ratings and analysis for ActiveRecord models. It can be used as a regular 0 to 10 rating scale and you can just ignore the NPS analysis methods.

ActiveRecord extension for sorted adjacency lists support

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.

This act gives an Active Record model the ability to act as a finite state machine (FSM).

Track activities in your ActiveRecord models.

ActiveRecord extension that serializes destroyed records into a trash table from which they can be restored. This is intended to reduce the risk of users misusing your application's delete function and losing data.

A ruby gem to handle multiple user roles on a Rails app, it also has Devise support

Active Record model versioning

Provides an authorization mechanism for Rails applications inspired by role-based access control (RBAC). Authorization is defined through readable rules that map roles to permitted actions, making access control easier to maintain.

Instance-based deploys made easy

Rails: Get notified when an after_commit block blows up

Rails plugin with dyanmic I18n backend for good internationalization.

Active Job Durable Continuation

Throttling of ActiveRecord model creations.

Ruby client for ArtLebedevStudio.RemoteTypograf service

Ruby interface to the AMEE carbon calculator

Annotate your models and keep your comments about fields.

A small library that defines how ActiveRecord models should be anonymised for deletion purposes.

Replacement for broken Class.new(ActiveRecord::Base)

Passive network mapping tool