Puma is a simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications. Puma is intended for use in both development and production environments. In order to get the best throughput, it is highly recommended that you use a Ruby implementation with real threads like Rubinius or JRuby.

Extend your middleware to include Node.js

What uses WEBrick to serve a JSON object representing the state of services running on a machine. It currently includes modules for monitoring Unicorn workers, checking for the existence of files and processes, and combining the output of other What servers.

Allows you to get information about Adhearsions status via rest calls

Provides a low-level up route for load balancers. Useful for injecting before loggin, so load balancers don't pollute the log.

Which Browser adds a few helper methods to a rack request making it easier to determine which browser is being used by the client.

Whisky is a micro-framework built upon Rack.

Whisper is a lightweight, simple weblaaagh server. Whisper is around 1200 lines of code, requires no database, can server over 1500 requests per second, and can output HTML, RSS, and text.

The official library for communicating with the Whoosh REST API

Spins web superlanguages as you write!

WikiMD is an easy-to-use knowledge database, which has minimal system dependencies

Protobuf client and server for the Wikipaddle API

Client library for the cartographer service.

Protobuf client and server for the Wikipaddle Internal API

Http server on top of Netty library

Hazelcast integration and surrounding features

Server backend for Wildsonet on top of Netty library

Ruby bindings for WiMP

Wings is a Rack-based, MVC framework with REST implementation, also supports ORM for database manipulation.

Rack middleware that logs API calls made to a file for documentation. This gem is being developed for the RapidFTR project - www.rapidftr.com