Hi Tijs,
I don't want to push this discussion further since your position is very clear.
Anyway let me clarify a couple of things about my previous statements:
We firstly customized Oryx and then seamlessly applied our implementation to Signavio Core Components and Activiti Modeler (since they are based on the same core code), we changed the UI style and we are happy with that. We don't need anything more than that.
My main interest was not to steal other's work but, because I consider Oryx (and its forks) a powerful modeler, I would be very happy to see it grow rather than dead.
Our solution can couple with _any_ process engine and we don't distribute Activiti Engine. I personally have a crush on Activiti because its code is very well written so if a customer will ask a recommendation, I would suggest to pick up Activiti but it is not integrated in our software.
I know everybody needs to have revenue to survive so I won't discuss this issue any longer.
Best,
Mike