UML

JetUML – create and edit UML diagrams

JetUML is a lightweight desktop application for quickly sketching software designs in UML. It deliberately concentrates on a small set of common diagram types rather than trying to provide a complete model-driven engineering environment.

Diagrams are stored in an open JSON representation and can be copied or exported for use in documentation and other applications. The interface includes automatic layout assistance and validation designed to keep diagram creation quick.

This is free and open source software.

Key Features

  • Class diagrams.
  • Sequence diagrams.
  • State diagrams.
  • Object diagrams.
  • Use case diagrams.
  • Automatic edge layout.
  • Semantic validation of diagram elements.
  • Open JSON-based diagram format.
  • Export to PNG, JPEG and SVG.
  • Clipboard integration.
  • Customizable appearance including dark mode, fonts and grid settings.
  • Reorderable diagram tabs.

Website: github.com/prmr/JetUML
Support:
Developer: Martin Robillard
License: GNU General Public License v3.0

JetUML in action
Click image for full size

JetUML is written in Java. Learn Java with our recommended free books and free tutorials.


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Read our verdict in the software roundup.


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