A simple Rack middleware to health check

Auto-create thumbnails when used with rack_grid

Simple Rack module and servlet for Trinidad based on Mizuno

Instrument all rack requests with Harness

Rack middleware for checking the process commit hash on Heroku

Zbatery is an HTTP server for Rack applications on systems that either do not support fork(), or have no memory (nor need) to run the master/worker model. It is based on Rainbows! (which is based on Unicorn (which is based on Mongrel)) and inherits parts of each. Zbatery supports your choice of ...

Rack middleware to allow/deny access to remote user by http method, path and query params.

Rack middleware for limiting requests based on an parameter

Rack middleware port of Rails's respond_to feature

rack_rscript is a web server which supports Ruby Scripting File (RSF) jobs

Tool that checks a Ruby application server for Rack compliancy

A CLI for rack applications based on htty.

Rack middleware to redirect requests based on path, but can be easily extended to match hostname, user-agent, or whatever might be available in the request.

A simple rack app wrapper that gathers request metrics using Coda Hale's metrics library

AnyCable-compatible Ruby Rack middleware

Stackable dynamic tree based Rack router

A simple rack for log information from environment.

HTTP Caching for Rack

A simple standalone jetty launcher for jruby rack apps

Enable paperclip file upload on Non-Rails rack application such as Sinatra