When comparing Syncthing vs Tresorit, the Slant community recommends Syncthing for most people. In the question“What are the best personal file-syncing solutions?” Syncthing is ranked 1st while Tresorit is ranked 6th. The most important reason people chose Syncthing is:
Licensed under [MIT](https://github.com/calmh/syncthing/blob/master/LICENSE).
Ranked in these QuestionsQuestion Ranking
Pro Free and open-source
Licensed under MIT.
Available for Linux, OS X and Windows and web.
Pro Reasonably active community forum
Pro Works out of the box
Requires no configuration to protect your privacy; it just works.
Pro Unofficial Android client available
An Android app was created by a third-party.
Pro Client-side encryption
Encryption is performed before content gets uploaded to the cloud.
With clients for Windows, Mac, iOS, Android, Windows Phone, and Blackberry.
Pro Free storage space (get additional space through bonuses)
5 GB, up to 16 GB with bonuses.
Con In beta
Although mostly stable, such stability is not guaranteed, and support is only community driven. Caution advised.
Because the software is proprietary, there's no way to review the security practices or really know how the software operates under the hood. As such it can be considered as not safe for sensitive information.