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LikeC4Structurizr
Free

Free and open source under the MIT License.

 Freemium

Open source under Apache-2.0; the documentation includes a pricing page for the server…

Web, Command line Web, Self-hosted
  • Generates diagrams from architecture models in code
  • Supports custom notation and nested model levels
  • Reference implementation of the C4 model
  • Many diagrams generated from one text model
  • Architecture definitions use LikeC4's own language
  • Focused on the C4 model rather than general diagramming
  • Requires learning the Structurizr DSL
Downloadable app, Web application Web application, Self-hosted
Open source Open source
License: MIT License: Apache-2.0
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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