A powerful yet easy-to-use UML diagram drawing program.
A microprocessor based intercom and building management system.
Green Bird Software
A small program to draw class diagrams and generate code.
Create visual representation of processes, organizations, and mind maps.
Creates call flows & UML sequence diagrams from textual inputs.
Creates activity diagrams, class and object diagrams and communication diagrams.
Faculty of Management Science and Informatics, University of Zilina
It's aimed towards diagram types commonly used by people involved in IT.
Visual Paradigm International Ltd.
VP-UML Community Edition (VP-UML CE) is a free UML drawing tool.
Poseidon for UML is a great UML tool with a complete set of diagrams.
Altova UModel is the cost-effective UML tool for successful software design.
GNU General Public License
UMLet is a free, open-source UML tool with a simple user interface.
Free Software Foundation, Inc.
Astade software is a UML tool for the complete C or C++ development process.
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.
Digitron Software Ltd
Create UML Class Diagrams with automatic layout, requiring no manual positioning.
Create UML class diagrams with full C# and Java language.
Ivar Jacobson International
Allows you to create UML use cases and class models.