Honeycomb is another integration between Tapestry and Hibernate. What's neat is that it supports Session Per Conversation (somewhat like Seam) and Session Per Request (much more common) right out of the box.
It even includes Maven archetypes to get the project set up quickly. Nice.
Once again, the power of HiveMind is evident here; just placing the Honeycomb JARs on the classpath mixes all the Honeycomb support directly into the application. No additional configuration needed.
On the other hand, there's virtually no documentation on how to use Honeycomb beyond the Javadoc ... and some of that is in German!