Camunda - The Universal Process Orchestrator
Kalam Labs - Twitch for Science
Appian - See how Appian, leading provider of modern low-code and BPM software solutions, has helped transform the businesses of over 3.5 million users worldwide.
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).
Joget.org - Open Source Workflow Software, Business Process Management and Low-Code Application Platform.
Litnerd - The Pixar for education, reading program for K-5 schools