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Umbrello UML Modeller is a Unified Modelling Language (UML) diagramming tool for KDE

UML allows you to create diagrams of software and other systems in a standard format (

Existing code files in various languages can be parsed and used in the diagrams. The available classes can be written to code files also in various languages.

The following diagram types are supported:

  • use case diagram
  • class diagram
  • sequence diagram
  • collaboration diagram
  • state diagram
  • activity diagram
  • component diagram
  • deployment diagram
  • entity relationship diagram

The projects home page is at The source code can be found on this page as part of the kdesdk package. Screenshots are found on this page.

Mailing lists are:


Umbrello is in a good state, when you are able

  • to parse its source code,
  • to draw diagrams and explore its architecture, classes and code
  • make changes to it
  • and generate the code again out of its model, so that you are ready to compile it again.

Or in other words, when you can use Umbrello for developing and improving itself.

Content is available under Creative Commons License SA 4.0 unless otherwise noted.