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Syncthing vs Sushitrain: catalog facts
Syncthing	Sushitrain
Free Free software; the Syncthing Foundation is funded by donations. There is no storage cost…	Free Open source under the MPL-2.0 licence and distributed through the App Store.
Windows, macOS, Linux, Command line, Self-hosted	macOS, iOS
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	Selective sync of individual files and subfolders On-demand access to files on other devices without a VPN
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	Background sync is limited by what iOS allows Apple platforms only
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0
No account needed	No account 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 October 1, 2026

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