Umbrello UML Modeller
Open Source / Non-Proprietary
part of KDE. Forward- and reverse-engineering for C++/Java/Perl/PHP/Python and other programming languages.
Umbrello UML Modeller is a UML diagram tool that can support you in the software development process. Especially during the analysis and design phases of this process, Umbrello UML Modeller will help you to get a high quality product. UML can also be used to document your software designs to help you and your fellow developers.
Having a good model of your software is the best way to communicate with other developers working on the project and with your customers. A good model is extremely important for medium and big-size projects, but it is also very useful for small ones. Even if you are working on a small one man project you will benefit from a good model because it will give you an overview that will help you code things right the first time.
UML is the diagramming language used to describing such models. You can represent your ideas in UML using different types of diagrams. Umbrello UML Modeller 1.2 supports the following types:
Use Case Diagram