Compare software

ownCloudQNAP Qsync
Freemium

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

 Free

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

Windows, macOS, Linux, Android, iOS, Web, Self-hosted Windows, macOS
  • Desktop and mobile clients for every major platform
  • External storage mounts bring existing shares and object storage into the same tree
  • Real-time sync across computers, mobile devices and the NAS
  • Keeps files on your own hardware instead of a public cloud
  • Split between the classic PHP server and the newer Infinite Scale rewrite
  • Enterprise features and support are paid
  • Requires a QNAP NAS
  • Mac backup is still in beta
Self-hosted, Web application Downloadable app
Open source Closed 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 September 22, 2026

Checked October 1, 2026

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