an Open Source BPMN 2.0 / DMN 1.1 Modeler
A Database System for Metamodeling and Method Engineering
Imixs Workflow - the open source business process management
A natural language modeling framework based on PyTorch
A QVT engine targeting Java
Code generation from UML to any language (Java, Objective-C, PHP...)
Human Physiology Engine
The easiest C++ way to deal with constraints !