Camunda - The Universal Process Orchestrator
Microsoft Office Access - Access is now much more than a way to create desktop databases. It’s an easy-to-use tool for quickly creating browser-based database applications.
jBPM - jBPM is a flexible Business Process Management (BPM) Suite.
My Visual Database - Using My Visual Database, you can create databases for invoicing, inventory, CRM, or any specific purpose.
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.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.