A FilePicker / PaperClip mashup. Use Filepicker for uploads and paperclip to process them.

Fine Uploader by Andrew Valums integrated for Rails 3.1 Asset Pipeline

Flag Icon Css

A lightweight & powerful datetimepicker using flatpickr lib https://github.com/chmln/flatpickr

Allows you to include http://flexboxgrid.com/ in your application alongside some view helper methods

Feature flipper is the act of enabling/disabling features in your application, ideally without re-deploying or changing anything in your code base. Flipper makes this extremely easy to do with any backend you would like to use.

Use Facebook's Flux dispatcher and Node EventEmitter in your Rails project.

Font Awesome More, SASS version, with assets pipeline, for Rails 3.1+

A fork of the original 'font-awesome-rails' gem to include a base64 encoded css file of all of the fonts (primarily for the purposes of pdf generation).

The best Ionicons gem made for Ruby on Rails and with helpers for better use.

This gem provides the assets for the formalize form styling, for easy usage with the Rails 3.1 asset pipeline.

Easily add jquery inputmask to your Formtastic.

Provides client side validations for forms with the http://formvalidation.io/ library.

Gakubuchi provides a simple way to manage static pages with Asset Pipeline.

Geolocation Form Submission Helper

The default_value_for plugin allows one to define default values for ActiveRecord models in a declarative manner

Use Google Apps as an Authentication Provider

Gem to Easily add Google+ Hangouts to any web page and Rails asset pipeline

Provides standard setup and behaviour for Sidekiq in GOV.UK applications.

Granity is a flexible, caching-friendly authorization engine that provides fine-grained access control for Ruby on Rails applications