What about envers?
Q: How this compares to jboss envers? (http://www.jboss.org/envers)
A: Envers ist an entity versioning system. This is much more complex. What Hibernate History does, is ... lets call it a changelog for your entity. The purpose is not accessing an older version of the entity, the purpose is the proof of when was the entity changed and what changed.
is the OpenSource platform of 