Create diagrams in a manual mode or using free templates.
A powerful yet easy-to-use UML diagram drawing program.
Creates activity diagrams, class and object diagrams and communication diagrams.
Creates call flows & UML sequence diagrams from textual inputs.
Faculty of Management Science and Informatics, University of Zilina
It's aimed towards diagram types commonly used by people involved in IT.
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.
Professional UML Diagrams and Software Diagrams Drawing Tools with Examples.
Omar AL Zabir
PlantUmlEditor is a convenient IDE to create UML diagrams using plantuml.
University of Manchester
It's a tool for helping blind people read software engineering UML diagrams.
A Google Chrome extension that renders UML diagrams as defined in a text file.
The next generation of data collection and incident management software is here.
Used by School Districts to improve their Multi-Hazard Incident Management.
Poseidon for UML is a great UML tool with a complete set of diagrams.
Cay S. Horstmann
Violet is a UML editor, very easy to learn and use, draws nice-looking diagrams.