Now Poseidon for UML is based on our Poseidon for DSLs platform.
Creates activity diagrams, class and object diagrams and communication diagrams.
No Magic Inc.
Facilitates analysis and design of Object Oriented (OO) systems and databases.
Visual Paradigm International Ltd.
VP-UML Community Edition (VP-UML CE) is a free UML drawing tool.
A powerful yet easy-to-use UML diagram drawing program.
Creates call flows & UML sequence diagrams from textual inputs.
Create visual representation of processes, organizations, and mind maps.
It helps you make electronic circuit diagrams and export them as images.
Faculty of Management Science and Informatics, University of Zilina
It's aimed towards diagram types commonly used by people involved in IT.
Diagram Designer is a graphics editor tool to edit graphical data.
Integrate it to other applications as an activeX control to create diagrams.
Umbrello UML Modeller is a Unified Modelling Language (UML) diagram program.
Adrian & Frank Buehlmann
Fast and Lightweight UML Diagram Editor for Windows 2000, XP and Vista.
Nevron Software LLC
Nevron Diagram Designer is a freeware diagram editor.
TMS Diagram Studio can add diagram and flowchart capabilities to your app.
Diagram Ring is an open source advanced diagram editor.
The UML stencil for Visio supports complete UML, SoaML and other UML profiles.
UML modeling tool with UML 2.4 support and round-trip Python, ADA, Java, C/C++...
Poseidon for UML is a great UML tool with a complete set of diagrams.
Microgold Software Inc.
WithClass is a rich featured UML Modeling Tool to draw UML Diagrams.