Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
RunaWFE - RunaWFE Free is a free Open Source BPMS (business process management system), which serves to optimize and automate business processes (for Windows, Linux, Mac OS).
DevTest - Test management solution for efficient quality assurance
Camunda - The Universal Process Orchestrator
Beta Testing - Beta Testing is an all-in-one feature-rich technical testing solution created to help small to large size businesses test and enhance their products through insights.
ARCWAY Cockpit - ARCWAY Cockpit is a BPM software that has graphical modelling tool that helps users to integrate it into different business frameworks process chains and data models.