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Ilograph vs Structurizr: catalog facts
Ilograph	Structurizr
Freemium New diagrams can be created online; on-prem and Confluence Cloud editions are separate…	Freemium Open source under Apache-2.0; the documentation includes a pricing page for the server…
Web, Self-hosted	Web, Self-hosted
Zoomable views from overview to component level Interactive sequence diagrams for flows	Reference implementation of the C4 model Many diagrams generated from one text model
Learning the diagram language takes some time Focused on system architecture rather than general drawing	Focused on the C4 model rather than general diagramming Requires learning the Structurizr DSL
Web application, Self-hosted	Web application, Self-hosted
Closed source	Open source
License not stated	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
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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