PlantUML creates diagrams from a concise textual description. This makes diagrams easy to keep alongside source code, documentation and other text-based project assets.
It covers the principal UML diagram types as well as many non-UML formats. PlantUML can be used from the command line, integrated into editors and documentation systems, or incorporated into automated workflows.
This is free and open source software.
Key Features
- Sequence, use case, class, object and activity diagrams.
- Component, deployment, state and timing diagrams.
- Supports ArchiMate, Gantt charts, mind maps and work breakdown structures.
- Entity relationship and network diagrams.
- Displays JSON and YAML data graphically.
- Wireframes and user-interface mockups.
- Text-based source is well suited to version control.
- Preprocessor and reusable standard library.
- Exports to formats including PNG and SVG.
- Integrates with a wide range of editors, documentation systems and development tools.
Website: plantuml.com
Support:
Developer: Arnaud Roques
License: GNU General Public License v3.0; GNU Lesser General Public License; Apache License; Eclipse Public License; MIT License
PlantUML limits image width and height to 4096.

PlantUML is written in Java. Learn Java with our recommended free books and free tutorials.
Related Software
| Unified Modeling Language tools | |
|---|---|
| Eclipse Papyrus | Edit models based on UML and related languages |
| PlantUML | Draw UML diagrams from simple textual description |
| Mermaid | Generate diagrams from markdown-like text |
| Umple | Create UML models textually |
| Modelio | UML and BPMN modeling environment |
| Gaphor | Simple UML and SysML modeling tool |
| Umbrello | UML Modeller based on KDE technology |
| UMLet | Java-based UML tool |
| JetUML | Sketch software design ideas with a minimum of fuss |
| Violet | Designed for people who need to produce simple UML diagrams |
| Dia | GTK+ based diagram creation software |
| crystal-facet-uml | Desktop UML and SysML modeling application |
| OpenPonk | Extensible workbench for UML, BPMN and other models |
Read our verdict in the software roundup.
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