an Open Source BPMN 2.0 / DMN 1.1 Modeler
Database ERD- design tool with Reverse Engineering
Imixs Workflow - the open source business process management
Make diagram faster without constraint
Toolkit for agent-based & dynamic microsimulation modelling
Free software for generating understandable and accurate fuzzy systems
PetriNetExec a library for embedding Petri Nets into Java applications