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FreeFileSync vs GoodSync: catalog facts
FreeFileSync	GoodSync
Free Free to download and use; the project runs on advertising and donations. A paid Donation…	Paid A paid licence is required beyond a restricted free tier.
Windows, macOS, Linux	Windows, macOS, Linux, Android, iOS
Transfers only the differences between source and target instead of copying everything Saved jobs run unattended in batch mode, suitable for scheduled backups	Block-level transfer with versioning across a very wide set of back ends Jobs can trigger when a drive or device is connected
The installer and the website carry advertising, and the download page pushes donations hard Some conveniences, including parallel file copying, are reserved for the paid Donation Edition	Paid licence per user, with a restricted free tier Closed source
Downloadable app	Downloadable app
Open source	Closed source
License not stated	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 20, 2026	Official website Full listing and sources Checked September 22, 2026

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