This Rack middleware allows you to run specific apps when the request domain matches a given filter. The filter can be provided in a number of ways, for example as a regex or as a string.

Middleware that provides both file extension and HTTP_ACCEPT-type content negotiation for Rack applications

A Rack middleware that transforms async requests (using thin + async_sinatra for example) into synchronous requests. Useful for testing Async Sinatra apps with a minimum of changes in your testing environment.

Rack middleware for declaratively setting the HTTP ContentSecurityPolicy (W3C CSP Level 2/3) security header to help prevent against XSS and other browser based attacks.

Rack Middle to creating static copies of rendered endpoints and reload them. It equates to a static file cache with other possible uses. See rubyops.net/gems/rack-hard-copy for details.

Rack middleware for interfacing with the Cachely page caching service.

Generate static files from Rack application and URLs.

A Rack middleware that provides an endpoint to start the New Relic agent.

Rack middleware to quickly add ip whitelisting to your app

Rack middleware that validates HTML with w3c validator and displays result in page.

Rack middleware for authentication using JSON Web Tokens using the jwt_claims and json_web_token gems.

Simple HTTP server launcher for Rack application (Sinatra, Rails, etc...)

Rack middleware that redirects www.example.com to example.com.

Rack middleware for serving alternate content on a given day

Rack Side Include helps you assemble pages like Edge Side Include (ESI) using ERB tags.

Just use Rack::HTTPCat in your application for all requests to have a link to the https://http.cat for their status under the HTTP-Cat header.

Rack middleware for compiling lesscss files into css

Mark Tor users using rack, for filtering / throttling / etc

Helps analyse memory usage in your Rack apps

Simple Rack middleware that catches OAuth2 access tokens and validates identity