I've been keeping my eye on the Reactor framework . Eventually I plan to implement a version of the Mach-II sample app using Reactor. Until I get around to it you can check out Dave Shuck's Mach-II/Reactor Jumpstart sample application. It features:

• Reactor Factory and Reactor Gateway Factories as plugins in Mach-II
• Application Logging and Session Tracking in the log files
• Roles Based Security
• Security Logging
• Skinning