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OverarchIcePanel
Free

Free and open source under the EPL-1.0 license.

 Freemium

Self-serve sign-up, with paid plans listed on the pricing page and demos for larger teams.

Command line Web
  • Supports C4 and several UML diagram types
  • Separates architecture models from their views
  • Built around the C4 model for software architecture
  • Interactive model rather than static drawings
  • Uses data files to define models and views
  • Aimed at software teams rather than general diagramming
  • Online only with an account
Downloadable app Web application
Open source Closed source
License: EPL-1.0 License not stated
Not stated if an account is needed Account needed
Not stated if it works offline Not stated if it works offline

Checked October 8, 2026

Checked October 2, 2026

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