Engine Yard Introduced New Ruby Web Server, Puma
Puma was developed for both speed and concurrency and is a viable alternative to WEBrick or Mongrel and unlike other Ruby Webservers, Puma was built for speed and concurrency. Puma is a small library that provides a very fast and concurrent HTTP 1.1 server for Ruby web applications. It is designed for running Rack apps only. Click here for more details and to download Puma.