A gem that helps you easily handle exceptions in your Ruby on Rails API and return informative responses to the client by serializing exceptions into JSON and other popular API formats and returning a response with a status code that makes sense based on the exception.

Parameter filter done OO, extending strong parameters.

Archive your Rails models rather than delete them, with model and controller concerns.

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.

Authorize implements a full-blown Role-based Access Control (RBAC) system for Ruby on Rails

Adds `autocomplete="off"` html attribute to FormHelper generated input tags by default.

jQuery automatic session timeout warning in a Rails application.

beyond is a collection of frontend components which aims for admin website.

A DSL for defining API schemas/endpoints, validating, serializing and generating Open API v3

View helpers that generate the proper markup for some Twitter Bootstrap components

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

Bootstrap wysiwyg gem for rails

Bourgeois is a Ruby library that makes using presenters a very simple thing.

brtraducao é uma das gems que compoem o Brazilian Rails

A mountable engine for bridge data storage, can either be used for direct database connection or as a localized data storage mechanism

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.

Rails rendering extension for more server-side html caching

Rails rendering extension for server-side html caching

Helps you support JSONP and CORS in your Rails app

Send notifications and messages. However you want.