The Imixs Workflow is an open source project based on Java technology. You can use the Imixs Workfow in any kind of java application. Imixs Workflow provides a full featured Workflow Management System (WFMS) based on the Java EE 6 specification. It fulfills the requirements to a scalable, transactional, robust and simple deployable Java EE Workflow System.
Platform: Linux;License: GPL
Reference: https://www.imixs.org/