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

Security related HTTP headers for Rack applications

Rack session store for Sequel

Slightly smarter session cookies for Rack 2 apps

A rack middleware to enforce appending or removing trailing slashes.

Simple Rack middleware which detect the request comes from smartphone

Not much to explain. Not a lot of code, but wanted it packaged up for easy use/deployment.

Rack middleware for building multi-protocol streaming rack endpoints

Rack middleware to remove cookies at user-defined paths.

Rack::TestApp is another testing helper library for Rack application. IMO it is more intuitive than Rack::Test.

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

Rack middleware for using the Authorization header with token authentication

Rack Middleware for logging raw incoming/outgoing HTTP traffic

Rack Middleware for filtering by user agent

Rack Middleware for filtering by user agent

A web console for Rack apps.

A Rack profiler for web applications.

Middleware uses wwwhisper service to authorize requests.

An ActiveSupport cache store that uses the C-based libmemcached client through Evan Weaver's Ruby/SWIG wrapper, memcached. libmemcached is fast, lightweight, and supports consistent hashing, non-blocking IO, and graceful server failover.

Tagged caching support for Rails