Middleware that will insert a timestamp within the Rack environment.

Multi-threaded Redis store for rack ID-based session (connection pooled with option for maximum redis connection)

Rack::Html5 sets custom headers for each HTML5 feature the browser supports.

rack middleware for multiple simple auth

Simple logger for rack

LESS CSS preprocessing for Rack apps.

rack middleware for writing access log to fluentd.

Rack::Compress enables Zstd and Brotli compression on HTTP responses

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.

Use R in your Rack stack

Place this in your rack stack and all caching will be gone.

Gemify jQuery for Rack

Rack middleware that provides tamper-proof cookies

Connects your rack app to Takana (http://www.usetakana.com) so you can live edit stylesheets within a Rails app

Customisable rack middleware to instrument to instrument your application

Rack Middleware to fix Apache's PATH_INFO issues where SCRIPT_NAME is stripped from it.

Manipulate page preview thumbnails for your Rack app.

Time machine for your views in the shape of a Rack middleware.

It's a rack middleware to add processing instructions on documents of response type XML.

SAML middleware for Rack (using ruby-saml)