More BPEL engines - ObjectWeb

As reported by BusinessWire:
" MOBE (MidOffice BPEL Engine) is a business process execution engine compliant with the OASIS standard BPEL (Business Process Execution Language). MOBE is used by Dutch companies and local government agencies such as the municipality of Almere, Netherlands.

In June 2004 ObjectWeb launched a market-driven initiative to federate the development of open-source components allowing commercial vendors to build ESB-related offerings. Formerly proposed as a commercial product, MOBE has been announced in open-source by ObjectWeb Dutch member company eMaxx in August 2004 with the first goal of being evaluated in the framework of the Enterprise Service Bus initiative. "

More importantly MOBE is opensource.