The SDL Threat Modeling Tool is the first threat modeling tool.
No Magic Inc.
Facilitates analysis and design of Object Oriented (OO) systems and databases.
2conciliate Business Solutions AB
The 2c8 Modeling Tool enables you to describe and share process flows and maps.
Helps to analyze security of the systems during a software design lifecycle.
Helps in finding threats in the design phase of software projects.
Creates activity diagrams, class and object diagrams and communication diagrams.
PyNSource Gui is a python code scanner and UML modelling tool.
Visual Paradigm International Ltd.
VP-UML Community Edition (VP-UML CE) is a free UML drawing tool.
UML modeling tool with UML 2.4 support and round-trip Python, ADA, Java, C/C++...
Microgold Software Inc.
WithClass is a rich featured UML Modeling Tool to draw UML Diagrams.
A UML modeling tool that supports the majority of UML diagrams.
Plastic Software, Inc.
A full, yet free, UML modeling tool for the professional developer.
Tigris.org (Open Source)
ArgoUML is the leading open source UML modeling tool.
Open ModelSphere is a powerful data, process and UML modeling tool.
Archi is a free modelling tool to create ArchiMate models and sketches.
Planit Software Ltd,
A 3D modelling tool specifically designed for quick and simple construction.