From the Open For Business Project documentation

The Open For Business Project, founded in 2001 by David E. Jones and Andy Zeneski, is an open source enterprise automation software project licensed under the MIT Open Source License. The goal of the project is to build a community of end users and developers that work together directly to create easy to customize business software based on best practices. The workflow engine in OFBiz is based on the WfMC and OMG Workflow Standards. OFBiz utilizes WfMC's XPDL spec for process definitions, and our Entity and Service engines for state and procedure invocations.