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UMLetGaphor
Free

Free and open source; donations are accepted through GitHub Sponsors, Patreon and PayPal.

 Free

The software is free under its open-source licence. Hosting, hardware and external…

Windows, macOS, Linux, Web Windows, macOS, Linux
  • Sequence and activity diagrams can be created from plain text
  • Exports to EPS, PDF, JPG, SVG and the clipboard
  • It keeps a real UML 2 data model behind the diagrams, so elements are reused across views rather…
  • Focused on drawing diagrams rather than full model-driven design
  • Plain interface may feel basic next to commercial modelling tools
  • It is a modelling tool rather than a quick diagram editor, and it does not generate code from…
Downloadable app, Web application Downloadable app
Open source Open source
License: GPL-3.0-or-later License: Apache-2.0
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.