Rack::Downtime provides a variety of ways to easily trigger and display planned maintenance notifications to users while a site is still up. Various strategies are provided that will work with sites of all sizes.

Rack::Ermahgerd is a simple Rack middleware that translates the content of a web page into Ermahgerd-ish

Rackful provides a minimal interface for developing ReSTful web services with Rack and Ruby. Instead of writing HTTP method handlers, you’ll implement resource objects, which expose their state at URLs. This version is not backward compatible with v0.1.x.

Load gists in the background. KTHXBYE!

Rack Middleware for syntax highlighting.

rack middleware to generate a replay log

Appends image sizes to all img tags

Ruby driven ESI for non-production environments

Rack Middleware for inserting Lettering.js style syntax into a response body

Logs helpful HTTP information on Rack requests.

If you are creating Rack middleware that changes the HTML response, use Rack::Mason to get a head start. Rack::Mason takes care of the boilerplate Rack glue so that you can focus on simply changing the HTML. Notethis is a fork from https://github.com/techiferous/rack-mason (c) techiferous@gmail.com

Add metadata tags to the header

A Rack middleware to publish directries containing media files as podcast

Rack Middleware for node manipulation.

Web page speed optimizations at the Rack level - fork

Pubcookie finally leaves the world of apache!

Rack middleware used to automagically format your code blocks using pygmentize

rack-pygments - Rack Middleware for Pygments, the syntax highlighter

Rack middleware for Pygments use in environments you cannot install Pygments directly (e.g., Heroku).

Proxies rekon as a rack app so you can include it in your rack-based riak application.