passenger-rails overrides the Rack::Handler.default method to return Rack::Handler::Passenger which will cause rack (and rails) to use passenger by default.

passenger-rails-server overrides the Rack::Handler.default method to return Rack::Handler::Passenger which will cause rack (and rails) to use passenger by default.

Patchbay is the web framework for non-web apps. It's designed for simplicity, minimalism, and easy integration.

Dependency configuration and injection for Ruby and Rails.

Provides a clean canonical interface to accessing PayrollHero APIs with Ruby

Index, Browse, and Query your vast pcap collection.

Rack::Hanoi helps you to solve Hanoi's Tower question using your browser. It can be used as a Rack middleware.

Gem for working with public API http://pecom.ru/business/developers/api_public/

This is going to be a better version of sinatra but not as heavy as rails

A friendly static site builder

Integrate a bot in your company with custom extensions

Programatically do stuff with Puppet Enterprise RBAC

a simple, fast, rack-based url shortening server

Write serverless Ruby functions via a REST-like microframework compatible with Rack or WEBrick.

Wrapper for Pharos REST API

versioning gem that works with rails and rack

Simple image processing and storage

Rack server for rendering javascript apps for bots

Camping for sissies

Pingable is a Rack handler that let an app respond to a path /ping, with pluggable checks.