An UML modeling tool for KDE. It supports most UML diagrams, code export (C++ and Java) and reverse engineering. [Open Source, GPL]

A list of UML modeling tools, short reviews and prices (Objects by Design).

Editor for UML class diagrams. [Open Source, GPL]

A UML editor based on UML 1.4 metamodel. It can export diagrams to SVG, JPEG and WMF formats, INTERLIS 2 and XML-Schema. It can import models and diagrams from Rational Rose XMI. [Open Source, LGPL]

UMLGraph allows the declarative specification and drawing of UML class and sequence diagrams. [Open Source]

Tool that helps developers write well-organized use cases and requirements. [Free Software, GPL+LGPL]

Cross-platform, easy-to-use UML editor integrated in the Eclipse development platform. [Open Source, GPL]

Allows editing UML, legacy diagrams and E/R and provides a round-trip database engineering tool and SQL editor in one integrated CASE tool. By Artiso Corp. [Commercial, Trial]

Cross-platform and easy-to-use visual UML modeling and CASE tool. Round-trip code generation and code reverse engineering support for Java. Integrated with Eclipse, JBuilder, NetBeans, IDEA, JDeveloper and WebLogic Workshop. [Commercial, Free Trial]

Visual UML is an easy-to-use yet powerful visual UML tool for object modeling that provides support for the following UML 1.4 and 2.0 diagrams. [Commercial, Free Trial]