OpenPonk/openponk

BPMN Modeler based on Eclipse Graphical Language Server Platform

Modelio is a modeling solution offering a wide range of functionalities based on the main standards of enterprise architecture, software development and systems engineering.

Epsilon is a family of Java-based scripting languages for automating common model-based software engineering tasks, such as code generation, model-to-model transformation and model validation, that work out of the box with EMF (including Xtext and Sirius), UML (including Cameo/MagicDraw), Simulink, XML and other types of models.

OpenModelica is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage.

Web-based Generic Modeling Environment

Umple: Model-Oriented Programming - embed models in code and vice versa and generate complete systems. Save yourself lots of coding. Do it collaboratively online in UmpleOnline, in an IDE or on the command line.

Gaphor is the simple modeling tool

JModelica is a software platform based on the Modelica modeling language for modeling, simulating, optimizing and analyzing complex dynamic systems.

Archi: ArchiMate Modelling Tool