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Structurizr vs IcePanel: catalog facts
Structurizr	IcePanel
Freemium Open source under Apache-2.0; the documentation includes a pricing page for the server…	Freemium Self-serve sign-up, with paid plans listed on the pricing page and demos for larger teams.
Web, Self-hosted	Web
Reference implementation of the C4 model Many diagrams generated from one text model	Built around the C4 model for software architecture Interactive model rather than static drawings
Focused on the C4 model rather than general diagramming Requires learning the Structurizr DSL	Aimed at software teams rather than general diagramming Online only with an account
Web application, Self-hosted	Web application
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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