When comparing Tresorit vs CrashPlan, the Slant community recommends Tresorit for most people. In the question“What are the best ultra secure online backups for Linux?” Tresorit is ranked 3rd while CrashPlan is ranked 4th. The most important reason people chose Tresorit is:
Encryption is performed before content gets uploaded to the cloud.
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 Unintrusive
You set it up once and from then it runs in the background whenever you are not using your computers (or at specified times).
Pro Supports multiple backup destinations
You can set up different files/folders to back up to specific places.
Pro Differential and incremental file backup
CrashPlan updates only that part of the file that has changed, saving bandwidth and time.
Pro Unlimited online storage
The $5/mo individual plan and the $12.50/mo family plan gets you unlimited cloud storage.

Pro Allows custom encryption keys
Custom 448 bit user-provided encryption key can be used to encrypt the backed up data in the cloud.
Pro Users can order a physical copy of their data
They will send you an external hard drive to your house.
Pro Unlimited revision history
CrashPlan saves all previous versions of a file.
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.
Con Significantly more expensive than just about everything else
Con Buggy
Con Home edition discontinued
CrashPlan's home edition will be shut down on October 23, 2018. They are no longer accepting new signups or subscription renewals.
Con Popular features (local backup and trusted offsite backup) no longer available
Con Heavy client
The BackupClient is based on Java and therefore a lot more memory-intensive than most other backup solutions
Con Buggy
