Watch for a method call in any class and run before/after callbacks. You can even watch your Rails models for events (like create, update, destroy), send these events to a event-runner instance and it redirect these events to other apps that are subscrived for them. This gem also provides classes that you can use to process the received events too.

Description of RailsStatusCheck.

This gem extends ActiveStorage to provide an after_analyze callback that gets triggered after analyzing an attachment

Provide a cool, and seamless, integration between ActiveAdmin and Trailblazer, so you can use your operations inside ActiveAdmin

Allow to store ActiveModel validations in ORM.

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

Allow you to map roles to activities and to check for allowance

Generic approval queues for record creation and updates

Acts As Caesar is a voting system - allowing up/down voting of objects.

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

Add embedded contact info to a mongoid model

Extends default CSV behavior to ActiveRecord models

Handle currencies on your ActiveModel with ease

Rails 3 gem to treat an attribute as a decimal (getting and setting floating-point values) but storing it as an integer in the database (useful for prices and other precision-needed attributes like money).

Gives models a field with daper decorator of the model itself

Rails gem to allowing models to be events for full calendar

This is a small library that helps increase the pliability of object constructor signatures. Instead of instantiating via the constructor, this library can install helper factory class-level methods that you can use with hashes.

A sortable and searchable list backed by Redis. You can use it as a quick actionable workflow queue which you can search/sort and paginate thorough

Description of ActsAsHoldable.

A gem for Ruby on Rails that makes managing devices and push notifications for both iOS and Android easy and reliable.