Warbler is a gem to make a Java jar or war file out of any Ruby, Rails, Merb, or Rack application. Warbler provides a minimal, flexible, Ruby-like way to bundle up all of your application files for deployment to a Java environment.

A bare-bones Ruby HTTP server that talks Rack and uses a thread per connection model of concurrency.

Implements a Linked Data Platform domain model, Rack middleware for server implementers, and a simple Sinatra-based server for RDF.rb

Restricts your Rails app to only provide requests during business hours using a Rack middleware

Minimum rack middleware for coverage

Generate your own shiny OpenAPI 3.0.0 documentation from Rspec request specs

A rack application daemon that creates an iCal subscription file from exchange calendars.

Enable server sent events with rack middleware implemented over Faye and Broadcaster (Redis Pub/Sub)

Easy and simple way to package up your rack based application into a .rap (Ruby Application Package) for deployment to a web container that supports .rap such as ThunderCat.

A group of Unicorns is called a blessing. Blessing gem provides an easy way to manage multiple Unicorn! Rack servers.

The elegance of Rack with none of the unreliability of HTTP

Provides object geocoding (by street or IP address), reverse geocoding (coordinates to street address), distance queries for ActiveRecord and Mongoid, result caching, and more. Designed for Rails but works with Sinatra and other Rack frameworks too. (clone of Geocode for older rails/ruby versions)

Enforces Rails relative URL root at the Rack level, i.e. before requests reach Rails.

A series of components for implementing the Ext.Direct API specification in Rails 2.3 and higher. Ext.Direct in Rails is implementede with Rack Middleware.

Framework-agnostic Rack middleware that normalizes forwarded tokens, enforces trust boundaries, and checks header/claims consistency before verikloak.

Rack middleware that intercepts crawler requests and serves rendered HTML from render.getindexboost.com.

This gem is almost a straight copy and paste of https://github.com/rswag/rswag/tree/master/rswag-specs with the Rails specific code stripped out so it can be used in Rack applications that don't use Rails.

kcar features an HTTP parser that will convert a bytestream into a 3-element array suitable for use as a Rack response. It is IO interface agnostic, so it may be used with HTTP streams over Unix domain sockets, regular files, FIFOs, StringIOs as well as traditional TCP sockets.

Simple sinatra Rack application that allowes to run sql queries from a web page. Usable for administrative tasks.

Pistachio provides a simple HTTP long polling middleware for Rack which is backed by the Stash gem