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

Create a versioned API with rails

Provides a simple and intuitive templating DSL for serializing objects to JSON.

Unobtrusively detects form submissions made by spambots, and silently drops those submissions.

brtraducao é uma das gems que compoem o Brazilian Rails

make CanCan work with strong_parameters

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

Rails 3 helper number_to_currency_in_words that displays a currency amount in words (eg. 'one hundred dollars')

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.

A configurable demo mode for your Rails app. Specify your desired "personas" and DemoMode will handle the rest.

HTML tables made easy (in Rails 4 & 5)

A secure version of Rails' built in CookieStore

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.