Camunda - The Universal Process Orchestrator
DocGen - Static website generator
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.
openSourceCM - Web-based legal document processing and contract management
jBPM - jBPM is a flexible Business Process Management (BPM) Suite.
LogicalDOC - A document management system such as LogicalDOC can help your organization better manage business processes and put order in the chaos of documents every day run your business.