Compare software

Syncthing vs FreeFileSync: catalog facts
Syncthing	FreeFileSync
Free Free software; the Syncthing Foundation is funded by donations. There is no storage cost…	Free Free to download and use; the project runs on advertising and donations. A paid Donation…
Windows, macOS, Linux, Command line, Self-hosted	Windows, macOS, Linux
No central server: none of your data is stored anywhere except on your own computers All traffic is TLS encrypted with perfect forward secrecy, and every device is authenticated by certificate	Transfers only the differences between source and target instead of copying everything Saved jobs run unattended in batch mode, suitable for scheduled backups
The official Android app was archived in December 2024; Android users rely on a community fork Both devices must be online at the same time for changes to move	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
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: MPL-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 20, 2026

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