Struts Ti
I heard about Struts Ti at OSCON, and after googling a bit today, I've discovered a bit more. Here's a bit about the project from Don Brown's proposal on the Struts Developers Mailing List.
Struts Ti is a simplified Model 2 framework for developing webapps which allows the developer better access to the underlying servlet/portlet environment. It serves a niche of web applications that don't want the additional complexity of server-side components and verbose configuration, yet want the structure and controller features of a modern web framework. Struts Ti builds on the directions of Struts 1.x, yet re-implements the framework to provide a clean slate for the next generation of Struts Ti. It aims to combine the simplicity of Ruby on Rails and NanoWeb, the refinement of WebWork 2, the tool-friendly authoring and Page Flow of Beehive, and the lessons learned from Struts 1.x.
The key word for Struts Ti is simplicity. Ideally, Struts Ti should approach Ruby on Rails levels of easy of use, yet scale up to large applications providing a smooth transition to JSF/Shale if desired.
More information can be found at https://www.twdata.org/projects/struts-ti.