Irwi is Ruby on Rails plugin which adds wiki functionality to your application.

Report key app statistics to the Librato Metrics service and easily track your own custom metrics.

A fast, safe, simple direct SQL executor for PG

OpenConferenceWare is an open source web application for events and conferences. This customizable, general-purpose platform provides proposals, sessions, schedules, tracks and more.

An easy extension for Paperclip to crop your image uploads using jCrop

A Rails interface for Intuit's Quickbooks Web Connector that's OPEN SOURCE!

Ramaze is a simple and modular web framework

Database-backed Rails error subscriber

Use searchable selects based on Select2 in Active Admin forms and filters.

ActsAsBookable is a reservation engine for Rails applications that allows resources to be booked. You can define availability rules for bookable models and set costraints to implement different types of booking (hotels, theaters, meeting rooms...)

Make user messageable!;-)

Bootstrap Forms makes Twitter's Bootstrap on Rails easy to use by creating helpful form builders that minimize markup in your views.

The browser timezone is set on the Time#zone

Uses custom html elements with attached IntersectionObserver to automatically lazy load partials via websockets

Provides simple way to integrate regression test selection approach to your RSpec test suite

Gretel is a Ruby on Rails plugin that makes it easy yet flexible to create breadcrumbs.

HasSecureToken provides you an easily way to geneatre uniques random tokens for any model in ruby on rails. **SecureRandom::base58** is used to generate the 24-character unique token, so collisions are highly unlikely.

A gem/plugin for Rails 3+ that enables client-side validation using ActiveModel + HTML5

Add schema comments in your migrations, see them in model annotations and db/schema.rb dump

Mousetrap is a javascript library for handling keyboard shortcuts in your web applications. This gem integrates Mousetrap with Rails asset pipeline for easy of use.