Better error page for Rack apps

Simple, but flexible HTTP client library, with support for multiple backends.

Manages application of security headers with many safe defaults

Build reactive applications with the Rails tooling you already know and love.

Debugging toolbar for Rack applications implemented as middleware

🍰 Version Cake is an unobtrusive way to version APIs in your Rails or Rack apps

Multi-fetch Fragments makes rendering and caching a collection of template partials easier and faster.

Simple OAuth 2.0 provider toolkit

Ruby interface to the Mixpanel Data API

An ActiveRecord extension to switch between multiple databases, such as in a master/slave setup

Command-line tool to manage your Google Calendar

Rails plugin that allows RESTful controllers to work with JSONP