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spacedesk vs OpenDisplay: catalog facts
spacedesk	OpenDisplay
Free Offered as free display extension software.	Free Free and open source under GPL-3.0, with optional donations.
Windows, macOS, Android, iOS, Web	macOS, iOS
Works over USB, Wi-Fi or LAN Viewers for Android, iOS, Windows and any HTML5 browser	True extended display, not just mirroring Works over USB or Wi-Fi with touch and scroll input
Primary machine is mainly Windows Wireless performance depends on the local network	Only extends Macs; Windows and Linux hosts are not supported Maintained by a single developer
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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