Parameter filter done OO, extending strong parameters.

Ariane is a flexible breadcrumb system for Rails. It is fully compatible with the Twitter Bootstrap and can be adapted to any kind of output.

Instant CSV support for Rails

Rails view helper for scaffolding show/index pages for objects

Twitters Bootstrap CSS and JS files all in one nice little gem

brtraducao é uma das gems que compoem o Brazilian Rails

Generates transparent PNG "bumpspark"-style sparklines. Use from Ruby directly or as a Rails helper generating an image tag w/ built-in data, as conceived by whytheluckystiff.

make CanCan work with strong_parameters

Helps you support JSONP and CORS in your Rails app

A CSV validator for Rails 3. See homepage for details: http://github.com/mattfordham/csv_validator.

Datatrans Integration for Ruby on Rails

Decanter aims to reduce complexity in Rails controllers by creating a place for transforming data before it hits the model and database.

Drape adds an object-oriented layer of presentation logic to your Rails apps.

HTML tables made easy (in Rails 4 & 5)

Asset gem for es5-shim

A tool designed to speedup library loading (startup time) in Ruby by caching library locations

Gem containing the textilize, textilize_without_paragraph, and markdown helper methods removed from Rails.

fuelux-rails project integrates Fuel UX Bootstrap extensions for Rails 3.1 Asset Pipeline

Middleware to catch exceptions and Rails Engine to render them. Error-handling views and controllers can be easily overriden.

Use Google Apps as an Authentication Provider