Five Square Software has released CatSlapper 1.0.1, a a $12.95 payware Mac OS X application for installing and managing multiple Jakarta Tomcats. Requires Mac OS X 10.4 and Tomcat 5.0.x are required.
Steve Roy has released Jaree, a free-as-in-beer utility that wraps a user interface around jar and javap to inspect the content of JAR files.