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draw.io vs OmniGraffle: catalog facts
draw.io	OmniGraffle
Free Free and open source under Apache 2.0. The project states you can use it for any purpose…	Paid Paid app with a free 14-day trial.
Windows, macOS, Linux	macOS, iOS
Works entirely offline with files stored locally, so nothing is uploaded Large shape libraries including AWS, Azure, Cisco and Kubernetes icon sets	Covers diagramming, rapid prototyping and vector design in one app Precise snapping, grouping and alignment tools
Electron, so it is heavy for a diagram editor No real-time collaboration in the desktop build	Apple platforms only Paid after the 14-day trial
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is 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 1, 2026

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