The Hoople team just released the 1.0 version of Hoople. We've been using Struts for a number of years and have found that managing the action mappings in the struts-config.xml file can be a big headache, especially with multiple developers.
Hoople has worked well for us by allowing us to configure the action mappings in separate XML config files that are stored where the URL would be on the filesystem if Struts wasn't there. There are also several other features that make working with the action mappings easier, like being able to use relative paths and assuming that forwards have a path that is the same as the request URL but with a .jsp extension if the path is not specified. There is a lot more to Hoople beyond managing your struts config file as well. It's similar in theory to XDoclet and other attribute-oriented programming techniques. Take a look: http://www.sundog.net/index.php/hoople/page/struts/
