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Synology Drive vs Resilio Sync: catalog facts
Synology Drive	Resilio Sync
Free Included free for Synology NAS owners; it requires Synology hardware.	Free Free for personal use. Business editions are paid.
Windows, macOS, Android, iOS, Web, Self-hosted	Windows, macOS, Linux, Android, iOS
Keeps files on your own NAS instead of a public cloud Desktop sync and backup plus mobile apps	Files sync directly between your devices with no cloud storage involved Fast on a local network and works well with very large libraries
Only runs on Synology NAS hardware Closed source	Closed source, so the protocol and crypto cannot be audited Both devices must be online at the same time to sync
Downloadable app, Self-hosted	Downloadable app
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
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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