Compare software

Resilio SyncSynology Drive
Free

Free for personal use. Business editions are paid.

 Free

Included free for Synology NAS owners; it requires Synology hardware.

Windows, macOS, Linux, Android, iOS Windows, macOS, Android, iOS, Web, Self-hosted
  • Files sync directly between your devices with no cloud storage involved
  • Fast on a local network and works well with very large libraries
  • Keeps files on your own NAS instead of a public cloud
  • Desktop sync and backup plus mobile apps
  • Closed source, so the protocol and crypto cannot be audited
  • Both devices must be online at the same time to sync
  • Only runs on Synology NAS hardware
  • Closed source
Downloadable app Downloadable app, Self-hosted
Closed 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 September 23, 2026

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