Camunda - The Universal Process Orchestrator
Timereaction - Collaborative workflow & communication solution
jBPM - jBPM is a flexible Business Process Management (BPM) Suite.
Kissflow Process - Kissflow Process is the cloud-based deployment business process management platform that allows the users to make complex processes without any kind of coding.
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.
Oracle BPM Suite - Oracle Business Process Management Suite provides a proven business-driven approach for creating end-to-end, efficient, and social business processes.