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

A multi-platform UML modeler that supports round-trip engineering for Java and C++. Various editions integrate with JBuilder, Eclipse, WebSphere, and NetWeaver. By Borland. [Commercial, Trial]

Telelogic TAU is a customizable modeling tool based on UML2 that supporting round-trip engineering and code generation for various languages like Java and C++. [Commercial, Trial]

A modeling solution designed to provide the tools necessary for development of enterprise systems. It supports business modeling, object-oriented and component modeling with UML, relational data modeling, and structured analysis and design. [Commercia...

UML State Chart design tool with code generation for C++, Java, C, C# (.Net) [Commercial, Free Trial]

Slim modeling environment, is a lightweight UML Class Diagram drawing plug-in for the Eclipse Platform. [Free, Available on request]

A tool for creating and editing UML sequence diagrams and call flows. Supports additional elements like states, actions and timers. Exports to PDF and RTF. By Effexis Software, LLC. [Commercial, Free Trial]

A design environment for business process modeling (BPM), service and component-based design (CBD), UML and database design. [Commercial, Free Trial]

Calculates structural design quality metrics such as coupling, size, complexity for UML designs and provides XMI import. [Commercial, Free Trial]

Program to make SDL, MSC, TTCN, URN and UML2 diagrams, implemented as a Microsoft Visio add-on. [Commercial, tree trial]