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.

Easy Rails API documentation.

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

A Rails engine for adding blogging to any Rails 4 application

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.

Gem for generating Canvas models and migrations and syncing data from Canvas

Stripe Payments Integration with Catarse crowdfunding platform.

Wepay integration with Catarse crowdfunding platform

Works like a simple tagging system, but instead of tags it has categories, and categories may have an ilimited level of subcategories.

Rails engine for automatically renewing SSL certificates.

Constructor – content management system

Provide reporting and analysis of your site CSP violations

Models used in the Duke Digital Repository

Provides a concern for monitoring changes to has_many and has_many_and_belongs_to associations using ActiveModel::Dirty.