A Controller middleware that is fairly basic. I would say it is a sort of Ramaze for kids

Insert a Chrome Frame install prompt for IE requests

Rough and dirty stubbing for authentication via Sorcery external (GitHub only for the moment)

Merb-like BlackBox testing for Rack apps, including Rails

Convert any rack-capable application to run on Google's App Engine

Provide walled-garden authentication to public members of your github organization for your rack-based apps with warden and omniauth-github

Dumps SQL queries with their positions in the source code

Provides exception classes and helpers for HTTP statuses

Meh

Simplifies the integration of a custom, standards-compliant SSO service into any Rack-based application (like Rails or Sinatra) using the OmniAuth framework.

Restfolia extension to avoid duplicated requests

A Rack-mountable Sinatra app that provides a read-only session browser, agent overview, and tool registry for Spurline agents. No JavaScript build step required.

Block crawlers who spam your site with fake HTTP referers

Detects the current locale from query parameter, path prefix, host or accept header.

Adds support for private beta invites for Rack-based apps.

Return blank response

Rack middlewares for double

Library to manage css and js assets in any rack-based framework

A simple implementation of provider protocols of oAuth 2.0 (right now just AssertionProfile).

Override useragent by cookie, switch agent by query.