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

It can be useful when you you are developing some app where you will work with meetings, events etc.

Flexible workflow gem.

Administrate fields for active storage

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.

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

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

Rails mountable Notification for any applications.

Prototype, Scriptaculous, and RJS for Ruby on Rails

A simple, extensible Rails forum

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

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

Adds multi themes support to your Rails 3/4 application

Store difference kind of actions (Like, Follow, Star, Block ...) in one table via ActiveRecord Polymorphic Association.

Use this module to defer actions to the after-commit hook. This is useful if you want to trigger actions in after_create, after_destroy and after_update callbacks but want to execute them outside of the transaction (for example, to avoid deadlocks).

Barista provides simple, integrated support for CoffeeScript in Rack and Rails applications. Much like Compass does for Sass, It also provides Frameworks (bundleable code which can be shared via Gems). Lastly, it also provides a Rack Application (which can be used to server compiled code), a around_filter-style precompiler (as Rack middleware) and simple helpers for rails and Haml. For more details, please see the the README file bundled with it.

Convenient Rails support for Cells.

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!

A new style forum for tiny community as Rails Engine. You can mount this in you apps.