I'd just like to clarify of the Activiti Model supplied by Signavio, has been contributed to the Activti project under the same Apache 2.0 license as the rest of the BPM engine, etc?
I ask because Signavio seems to be a superset of Oryx and on the Oryx website it states that Signavio Modeller is 10% Oryx open source and 90% close source.