oracle pl/sql based tools for design development and maintenance
Object-oriented equation-based modelling and optimisation software
It's a clone of 'https://sourceforge.net/projects/codedesigner/'
Open-source code generator for Simulink/Stateflow
Modeling tool supporting UML, BPMN and other standards
A free cross-platform editor for the DRAKON visual language.
Code generation from UML to any language (Java, Objective-C, PHP...)
A diagram/modeling tool.
vipera is an application designer for Python