Tresorit provides file synchronization, storage and sharing. It describes its encryption as end-to-end and zero knowledge. Sharing links can use passwords, expiry dates and download limits, depending on the plan.
The free Basic plan has limited storage, file size and device synchronization. Compare personal, SecureCloud and FileSharing offers carefully: storage capacity and administration controls differ. Encryption does not remove the need to manage recipients and account recovery.
Sources: Tresorit Basic · Sharing guide
