Rails engine which takes your markdown documentation stored in your application repository and exposes that as a wiki-style, navigateable wiki.

A Rails Engine for a simple file-based CMS, suitable for a documentation site. Originally created to power the Chargify documentation at http://docs.chargify.com

Documentation is a Rails engine which provides a complete system for managing a set of hierarchical documentation. This gem allows document searching and fragment highlighting with the Sunspot gem and Apache's Solr search index.

By adding simple markup to your controllers or routes.rb you can specify your api doc.

Turn documentation stored in doc folder in your rails app in a pdf file using wkhtmltopdf

Very simple ABTest functionality for Ruby, based in ActiveRecord and with Rails 3 generators

Read Rails Guides on your Kindle

Form Builder for Rails3 and MongoID

Dirty History is a simple gem that allows you to keep track of changes to specific fields in your Rails models using the ActiveRecord::Dirty module.

Processes relevant ActiveSupport::Notifications from Rails, Sinatra and Rake applications, sending them to Datadog.

utilities for building non-Rails web apps

Doku Payment Gateway for ruby (rails)

Dokku Client for rails project with preinstalled dokku plugins

Rails + Postgres Partitions

Paper-thin Facebook validation and signed request parsing Rails plugin

Rails integration for the RubyMoney gem including helpers

Provides generated HTML data for Rails applications

Doorkeepr publishes your web app to your frontend proxy.

Some helpful feature for rails

Rails plugin for caching model methods