Ruby on Rails: Merb
Merb was started two years ago by Ezra Zygmuntowicz as a tiny framework to serve ERb templates from Mongrel. This quickly grew into much more and carved out a niche as an alternative Rails stack. Merb...
http://rubyonrails.org/merb
http://b.hatena.ne.jp/entry/http://rubyonrails.org/merb