Small rack middleware to block your site from unwanted vistors. A little bit more convenient than basic auth - browser will ask you once for the password and then set a cookie to remember you - unlike the http basic auth it wont prompt you all the time.

If you are creating Rack middleware that changes the HTML response, use Rack::Plastic to get a head start. Rack::Plastic takes care of the boilerplate Rack glue so that you can focus on simply changing the HTML.

Includes {'X-Clacks-Overhead': 'GNU Terry Pratchett'} header inside any rack application. http://redd.it/2yt9j6

A simple profiler for Rack applications, only depending on ActiveSupport::Notifications

Handle race conditions in Rails JS feature tests caused by outstanding overlapping actions in your app, with rack middleware to let you wait for pending feature test actions to finish

Rack::RequestID is a Rack middleware for generating request IDs. It generates a request GUID for every request (if one was not already provided) and inserts the request ID as a response header.

Rescue Handler for Rack

Adds an extra X-REVISION header with source code revision string (git, svn, etc)

Rack middleware for serving RPC endpoints.

Serve static files from S3 via Rack

Rack::Sanitizer is a Rack middleware which cleans up invalid UTF8 characters in request URI and headers.

Security related HTTP headers for Rack applications

Upload files securely

Show server status

Slightly smarter session cookies for Rack 2 apps

Rack middleware that deletes cookies at designated paths, including support for wildcard patterns for flexible cookie management.

Rack middleware to route requests with subdomains to specified routes with substitutions

Extends rack-test to simplifies the process of unit testing properly designed RESTful API's.

Allow web service clients to specify the request time zone in an HTTP header.

Analyze timing and process info from your Rack stack.