When comparing Tresorit vs Sync, the Slant community recommends Sync for most people. In the question“What are the best cloud storage services?” Sync is ranked 4th while Tresorit is ranked 12th. The most important reason people chose Sync is:
250% more space than Dropbox basic plan.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Client-side encryption
Encryption is performed before content gets uploaded to the cloud.
Pro Cross-platform
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.
Pro 5GB of free storage
250% more space than Dropbox basic plan.
Pro Privacy conscious
Terms and conditions favor user privacy.
Pro Encryption
Data is fully encrypted on the client-side, both in-transit and at-rest.
Pro Two-factor authentication
Even free accounts offer 2FA.
Cons
Con No Telephone Support
Con Proprietary
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.