Sail is a lightweight Rails engine that brings an admin panel for managing configuration settings on a live Rails app.

You'll be in stitches at how easy it is to create a service at Stitch Fix

TabsOnRails is a simple Ruby on Rails plugin for creating tabs and navigation menu for a Rails project.

A rich text editor for everyday writing

twitter-typeahead-rails packages the typeahead.js jquery plugin for rails

Flexible workflow gem.

Compatible migration file between Rails 4.2 and 5+

Bootstrap is Twitter's toolkit for kickstarting CSS for websites, apps, and more. It includes base CSS styles for typography, forms, buttons, tables, grids, navigation, alerts, and more.

Convenient Rails support for Cells.

Creates a Rails 3 engine with Rakefile, Gemfile and running tests

Ensures consistent output of db/schema.rb despite local differences in the database

FixtureBuilder allows testers to use their existing factories, like FactoryGirl, to generate high performance fixtures that can be shared across all your tests and development environment. The best of all worlds! Speed, Maintainability, Flexibility, Consistency, and Simplicity!

Build JSON API-compliant APIs on Rails with no (or less) learning curve.

Create system tests interactively.

Rails mountable Notification for any applications.

Prefixed IDs generates IDs with friendly prefixes for your models

Prototype, Scriptaculous, and RJS for Ruby on Rails

Out of the box, Rails will render templates in a controller context only. This gem allows for calling "render" from anywhere: models, background jobs, rake tasks, you name it.

A simple, extensible Rails forum

Tarantula is a big fuzzy spider. It crawls your Rails 2.3 and 3.x applications, fuzzing data to see what breaks.