Allow to track changes of records which done through ActiveAdmin

Converts ActiveAdmin into a simple CMS

ActiveAdmin CMS extension

Plugin for active admin which allows to easy modify I18n translations

Rails 3 Bayesian Ratings Gem

Rails engine to implement a Ruby backend store implementation for Annotator, an open-source JavaScript library to easily add annotation functionality to any webpage.

Add pagination info to the response headers, GitHub style.

Apress-Api

ArchiveTree is a Ruby Gem that makes it easy for you to create beautiful chronological archive trees of your models. For instance, you can create a tree for your blog posts.

Dead simple asset uploader attachments for your active record models

Framework that uses aws-ses to send newsletters

BAJA

A mountable Rails engine to create a payment server that can handle the money in your Bitcoin ecosystem

Brightcontent core

Imagine you have an Account model which has many transactions. calculable_attrs gem allows you to define Account#balance as SUM(transactions.amount) directly in your Account model. And solves n+1 problem for you in an elegant way.

MoIP integration with Catarse crowdfunding platform

Stripe Payments Integration with Catarse crowdfunding platform.

Wepay integration with Catarse crowdfunding platform

Canvas LTI and OAUTH2 mountable engine

Constructor – content management system