Modelbridge is an Eclipse plugin that lets you copy data between Java objects.
You create a mapping definition in a fully integrated editor and Modelbridge generates code that performs the mapping.
We use Modelbridge in production but it was not intended to become a product at first. It solves our problems but might not yet fit yours, but we are happy to assist in extending its scope.
Modelbridge is licensed under the Apache License v2.0
Modelbridge comes with a documented example project which is the best way to get started and experiment.
Modelbridge is hosted at Github.