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).

Allows methods and attributes of priceability also employing money rails

This gem will give you only two scopes and a method for handling published/unpublished stuff. Nothing remarkable bur saved me a lot of typing when I wrote it for a project with an huge number of publishable models. Suggestions are more than welcome.

Acts as published beahviour for active record models.

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

Orders ActiveRecord items by floating ranks for spaces in-between items. Influenced by gem ActsAsList. The floating rank allows inserting items at arbitrary positions without reordering items. Thus, reducing the number of WRITE queries.

Emoji reactions for rails

Allows records to be marked as readable. Optimized for bulk, 'mark all as read' operations

Overloads the create_or_update_without_callbacks method to allow duplicate records to be replaced without needing to always use find_or_create_by.

Use a field to store plain-text roles and manage them easily

A rails plugin use redis to sort models on real time.

Sanitizable concern to sanitize attributes the way you like

Create virtual attributes.

Add the ability to give star ratings to various models.

Rails injectable Redis-backed activity stream system. This is an alpha release of code that I just wrote and put into production on 3/11/12. Send feedback and post bugs to the Github page, but use at your own risk!

create a url-friendly stub based on an activerecord column for your models

A rails engine that lets you mount a job search engine

Multiple tokens for Rails application.

Allows models to issue warnings if a task goes wrong

Returns values for specified methods on each object containing mixix and values from general methods specified for models that don't have the mixin; depending on 'depth' value passed in the method will also recursively return values for associated objects on each model scanned