Provides a simple authentication middleware to lock down Rack-based apps

Rack middleware for Pygments use in environments you cannot install Pygments directly (e.g., Heroku).

Provides a routing layer for Rack similar to nginx location directive. http://wiki.nginx.org/HttpCoreModule#location support provided by ATT Interactive (http://yp.com)

A rack middleware for exposing session state to tests.

Rackspace Cloud Monitoring Ruby Bindings, built on top of fog.

Mark Tor users using rack, for filtering / throttling / etc

Use Hevents (https://github.com/yarmand/hevents) to create JS init function for Rails controllers and views. Provide helper to setup handlers in your Rails code

Location is a Radiant Extension that will allow you to create relatively robust list of locations (stores, churches, etc.).

Some basics that your application could benefit from.

RadiusRB, a ruby RADIUS client library that supports: Authentication, Accounting, Custom dictionaries and Vendor Specific Attributes.

A simple and straightforward settings solution that uses an YAML file

Asynchronous response API for Sinatra and Thin

ruby client for ragios

rails_angular_seo allows you to make your single-page apps (Backbone, Angular, etc) built on Rails SEO-friendly. It works by injecting a small rack middleware that will render pages as plain html, when the requester is one of the most common crawlers/bots out there (Google, Yahoo Baidu and Bing)

rails-bootstrap-daterangepicker

Load yaml and json config files and make the structures easily available for use in the app.

Eos is a power-pack for your Rails apps. Speed through your project setup and enjoy agnostic styling, handy utilities and a good slathering of magic sauce.

Build a static frontend app with rails

Rails Graphical User Interface - User-Friendly Rails Configuration (e.g. display routes in a table, run rails commands visually, etc...)

Partial validation of ActiveRecord objects in Ruby on Rails 4+ made simple.