Compare software

clang-umlSwiftPlantUML
Free

Free and open source under the Apache-2.0 license.

 Free

Free and open source under the MIT licence.

Command line macOS
  • Generates multiple UML diagram types
  • Exports to PlantUML, MermaidJS, GraphML, and JSON
  • Works from inside Xcode and from the Finder
  • Produces class diagrams directly from Swift code
  • Focused on C, C++, and Objective-C code
  • macOS and Swift only
  • No tagged releases and infrequent updates since early 2024
Downloadable app Downloadable app
Open source Open source
License: Apache-2.0 License: MIT
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 8, 2026

Checked October 2, 2026

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