an Open Source BPMN 2.0 / DMN 1.1 Modeler
MDG for Sparx' Enterprise Architect to Create TRAK arch. descriptions
Domain-Driven Design sample application
Open-source code generator for Simulink/Stateflow
Display NetBeans Module Dependencies
A free cross-platform editor for the DRAKON visual language.
UML diagram editor
Java implementation of FQL
A PlantUML editor written in Qt4
A modeling tool for software engineers (OO)
Free software for generating understandable and accurate fuzzy systems
Code generation from UML to any language (Java, Objective-C, PHP...)