Compare software

QNAP QsyncownCloud
Free

Provided by QNAP for use with its NAS devices, which must be bought separately.

 Freemium

The server is free and open source. Enterprise editions and support are paid.

Windows, macOS Windows, macOS, Linux, Android, iOS, Web, Self-hosted
  • Real-time sync across computers, mobile devices and the NAS
  • Keeps files on your own hardware instead of a public cloud
  • Desktop and mobile clients for every major platform
  • External storage mounts bring existing shares and object storage into the same tree
  • Requires a QNAP NAS
  • Mac backup is still in beta
  • Split between the classic PHP server and the newer Infinite Scale rewrite
  • Enterprise features and support are paid
Downloadable app Self-hosted, Web application
Closed source Open source
License not stated License not stated
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

Checked October 1, 2026

Checked September 22, 2026

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