Include and depend on third-party JS (and CSS) libraries

Gemify jQuery for Rack

A bunch of rack middlewares to enforce secure cookies and add HSTS (Strict Transport Security) and HPKP (Public Key Pinning) headers to your Rack application.

Identify and prevent tor users to access a Rack / Rails application.

The Rack::TradeTracker gem is for use with the Trade Tracker affiliate network. The gem provides a Rack middleware component to handle Trade Tracker's redirect mechanism.

Rack::Transform is a middleware that attemps to make a compatibility layer between two different request/responses that should hit the same endpoint.

Rack middleware; truncates error body

rack middleware to serve static files with specified patterns. Check out http://gmarik.info/blog/2010/05/10/blogging-with-jekyll-and-heroku-for-free for more...

The Recontributed Rack Middleware

Automatic port forwading via SSH tunneling.

Rack Middleware for validating twilio request signatures

Rack Middleware for OAuth Authorization and Authentication via/twitter

Rack middleware to automatically include your Typekit JavaScript files

rack middleware to add u2f authentication to a rack app. Includes registration.

Elegant workflow for Rack::Auth::Basic

Now you don't have to worry about bugs in your javascript code anymore!

Integrate Unpoly with any Rack or Sinatra application

Many sites these days absolutely require a user to have Javascript enabled in order to function properly. You may have one yourself. Users that either have JS disabled or only allow trusted sites to execute JS should be given a textual warning that their user experience may be hampered. This Rac...

Rack middleware to uppercase your app's responses, built as an example/demo.

Middleware that injects upstream server info into the response