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Nextcloud vs QNAP Qsync: catalog facts
Nextcloud	QNAP Qsync
Freemium The server and clients are free and open source. Nextcloud GmbH sells enterprise support…	Free Provided by QNAP for use with its NAS devices, which must be bought separately.
Windows, macOS, Linux, Android, iOS, Self-hosted, Web	Windows, macOS
Your storage limit is your own disk, and your data never leaves it Desktop client supports virtual files, so a big library costs no local space	Real-time sync across computers, mobile devices and the NAS Keeps files on your own hardware instead of a public cloud
You run the server, which means updates, backups and certificates are yours Major version upgrades are known for needing careful reading	Requires a QNAP NAS Mac backup is still in beta
Self-hosted, Downloadable app	Downloadable app
Open source	Closed source
License: GPL-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.