Tresorit

Pros

I love how Tresorit makes syncing and storing my files not only simple and easy to use (it's practically invisible as it integrates with your computers file system - just set it up and forget it), but primarily because I know that my files are safe since it uses end-to-end encryption as well as zero-knowledge security. It has all the security features you would expect and more, such as 2FA, and login notifications that will tell when and where if someone tries to access your account, and even the ability to see how many times your shared files have been downloaded.

But what makes them really stand out against all the others is their use of client-side encryption, meaning that unlike their competitors, your files are encrypted before they're uploaded to the cloud - so no one, not even Tresorit themselves can see your files - because only you hold the key. Syncing across multiple devices works flawlessly, and file upload/download speed is very fast. Their support team is phenomenal, and they're always quick to respond and happy to help, and is some of the best customer support I've ever received. I've used and trusted Tresorit since their launch, and I highly recommend them.

Cons

One of the things that I've found to be a little tough is file deletion, as of now if you delete a file it's gone forever since it's synced among your devices (there is no trash folder/function). Although, I've been told that this is something that they're working on and am looking forward to being added in the future.

Pros

There are multiple cloud storage solutions with different goals. For the goals of highest security (end-to-end encryption with no possibility for Tresorit or anyone else without your password to access your data) with easy/seamless access on both computer & mobile, there is no better solution that Tresorit.

Features I use include:
- 5 GB free for life after doing introductory tutorials/exercises
- end-to-end encryption with zero knowledge by Tresorit (just be sure not to lose your password; although you can still reset password if you are logged in on one device, if you are completely logged out and forget your password, no more access to your data by design)
- seamless integration with iPhone including photo thumbnails and ability to view images as they load, camera upload
- iPhone app includes 4 digit PIN key lock

Cons

Obviously, even more storage for free would be better, but Tresorit gives you the highest amount of free storage for an end-to-end encrypted, zero-knowledge-by-your-cloud-storage-provider solution.

Pros

I love the total control and accessibility to each file or folder. We sync 9 machines with GB of data and not once we experienced a failed sync or a versioning issue. The encryption method is among the best in the industry. Usability is top notch. In my team I have MDs with our not particularly tech-savvy, and they use Tresorit with no issues.

Cons

I cannot list one single issue, Tresorit is 360 degree perfectly designed platform. I hated the 1GB size file limited but now that limitation is gone. At Tresorit they listen to their customers' suggestions.

Pros

As a cyber security professional, and a personal security advocate, the security and ease of use that Tresorit delivers is top notch. Unlike other popular file sharing services (D...box and others), Tresorit supports client side encryption. This means even if Tresorit is hacked, your data is still secure - Tresorit never has access to your unencrypted files. In the current environment of constant hacking and government supported (and subsequently lost) efforts, this is a giant step up from standard online file services.

The file folder integration makes using Tresorit extremely easy. I've set this up for my parents and grandparents. They all know to look for the folder with the Tresorit icon and save all their financial and personal documents there. All have commented on how easy it is to use, and has made a Quicken crash easily recoverable for one of them. Anyone, even the most basic users, can easily use this software, and greatly increase their data security.

Pros

I carefully researched and indeed used other cloud storage services only to find them all truly lacking in the most critical area; Tresorits complete integration of solid secure storage is superior.
My group of businesses depend on Tresorit's end-to-end encryption to securely collaborate amidst my team's. We are transferring sensitive, critical data that I was never completely comfortable doing using other services.
Tresorits web site and apps make using their service a breeze to I repeated into our workflows and having access on the go is brilliant.
"Tresor" has become a commonly used verb now for our group of software engineers, financial and business team and management.