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draw.io vs Gliffy: catalog facts
draw.io	Gliffy
Free Free and open source under Apache 2.0. The project states you can use it for any purpose…	Paid Paid product; pricing is listed on the website.
Windows, macOS, Linux	Web
Works entirely offline with files stored locally, so nothing is uploaded Large shape libraries including AWS, Azure, Cisco and Kubernetes icon sets	Tight integration with Confluence AI diagram generation in Confluence
Electron, so it is heavy for a diagram editor No real-time collaboration in the desktop build	Most useful for teams already on Confluence No free plan mentioned
Downloadable app	Hosted service
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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