Trails is a domain driven development framework in the spirit of Ruby on Rails and Naked Objects.
The trails project aims to make Java enterprise application development radically simpler by allowing developers to focus on the domain model and having other portions dynamically generated. We are building on existing technologies such as Tapestry and Hibernate rather than reinventing the wheel.
Trails is not dead per se, rather Trails 1.x is in maintenance mode and Trails 2 (Tapestry 5 based version) has been renamed to Tynamo.
So please, come visit us at http://tynamo.org.