Merb (Mongrel plus EeRuby) is an MVC (ModelViewController) framework. For more information see http://merbivore.com/index.html Formerly "Recommended as an alternative to RubyOnRails on RubyOnRailsRulesTheUniverse." Now it is ''mandated'' as the alternative - Rails3 will use a Merb core: MerbAndRailsMerge. The dark secret here was Ruby and TDD were so fine that Rails could become Ruby's KillerApp despite having a weak core. Merb is all about core, pluggability, and SoftwareProductLines, so RailsThree is going to be just another of its products. ---- Here's some Merb, and GraphViz, showing a mind-map of a blog: http://broadcast.oreilly.com/phlip_images/jammin_blog.png http://broadcast.oreilly.com/2009/02/merb-mind-maps.html MerbAndRailsMerge ---- CategoryRuby | CategoryFramework