What Is Mongrel2?
Mongrel2 is an application, language, and network architecture agnostic web server that focuses on web applications using modern browser technologies.
Mongrel2 supports 17 languages and platforms, HTTP, Flash sockets, WebSockets, Long Polling, and many ways to deploy and hack on it.
Getting Started
wget https://github.com/zedshaw/mongrel2/tarball/v1.8.0