Somatsu is a web app with its Rack middleware permits to manage rails apps installationsadding multi database support.

Flexible Swagger documentation for Rack and Grape

A Rack middleware that sends every Exception as GELF message to your Graylog2 server

Library facilitating seeding of SOAR aspects in the rack environment

A microframework for web api built on rack

A microframework built on Rack.

Trafficlogger is a Rails Engine with Rack Middleware to track incoming HTTP requests coming to your site and logs them with detailed information about the Request

Plugin collection for the rack based nano framework Track, currently containing ActiveRecord and Sequel plugins

Rdft is a Sinatra application which serves github Post-Receive Hooks, updating repositores and shows documentation for it with yard. Rtfd is provided as Rack application.

A rack mountable web interface for viewing Amazon Route53 DNS records.