OpenWFE means Open source WorkFlow Engine.

This engine is implemented in Java. It is available under a revised BSD licence.

OpenWFE not only features a workflow engine, but also a full Business Process Management Suite.
As released, it features a Worklist component for storing workitems (tasks) for participants and a Reactor component, for automatic participants.
It also features Droflo, a web based flow designer.
OpenWFE doesnt require any Application Server, just a 1.4.x Java Development Kit.

Workflow definitions are expressed in our own language, which is extensible. An XPDL filter is under work : it will allow OpenWFE to interpret and use XPDL defined business processes.