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Ilograph vs Gaphor: catalog facts
Ilograph	Gaphor
Freemium New diagrams can be created online; on-prem and Confluence Cloud editions are separate…	Free The software is free under its open-source licence. Hosting, hardware and external…
Web, Self-hosted	Windows, macOS, Linux
Zoomable views from overview to component level Interactive sequence diagrams for flows	It keeps a real UML 2 data model behind the diagrams, so elements are reused across views rather…
Learning the diagram language takes some time Focused on system architecture rather than general drawing	It is a modelling tool rather than a quick diagram editor, and it does not generate code from…
Web application, Self-hosted	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is 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 September 22, 2026

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