dekart

webmoney_acceptor

Controller & view extension to ease WebMoney payment processing

paperclip_mogilefs_storage

MogileFS Storage for Paperclip

breadcrumbs

Breadcrumbs builder & helpers

cbrf-currency

furwall

Permission management plugin for Rails

async_test

Testing asynchronous Ruby frameworks

regions

Extendable regions in your templates

acts_as_unvlogable

An easy way to include external video services in a rails app.

div_form_builder

Form builder with inline message errors, previous field value, and configurable markup

feedzirra

A feed fetching and parsing library that treats the internet like Godzilla treats Japan: it dominates and eats all.

metadata

HTML metadata manipulation object

radiant

Radiant is a no-fluff, open source content management system designed for small teams.

workflow

Like acts as state machine (aasm), but _way_ better (it's in Ruby too!)

acts_as_versioned

ActiveRecord plugin for versioning your models.

delayed_job

Database backed asynchronous priority queue -- Extracted from Shopify

facebooker

The facebooker Rails plugin

hostinsite.ru

mechanize

Mechanize is a ruby library that makes automated web interaction easy.

net_dav

WebDav client library

paperclip

Easy file attachment management for ActiveRecord

paperclip_removable_attachment

Allow easy removal of Paperclip attachments using checkbox in your forms

paperclipped

Radiant extension for managing assets and images with the Paperclip plugin

paystream

Small controller & view extension to ease PayStream SMS payment processing.

rack-oauth

Rack Middleware for OAuth Authorization

radiant-mailer-extension

An extension for Radiant CMS that allows you to create 'contact us' and other mail-bound forms.

radiant-sns-extension

Adds Stylesheet and Javascript management to Radiant

radiant-tiny-paper-extension

Radiand CMS Tiny MCE support using Paperclipped assets

state_machine

Adds support for creating state machines for attributes on any Ruby class

teambox

Open-source project collaboration software. See screenshots below. Use it for free online: www.teambox.com

validates_email_format_of

Validate various formats of email address against RFC 2822.