Cryptomator

About

Cryptomator is a tool for protecting data stored in the cloud. Instead of relying on cloud providers to encrypt your files or hold the decryption keys, you set a password for a folder called a vault within your cloud storage. The software encrypts both files and filenames with AES using a 256-bit key length, so anyone who looks into the folder in your cloud cannot draw conclusions about your data. Once unlocked with your password, the vault appears as a virtual encrypted drive, and files you store on it are encrypted automatically.

Cryptomator is described as open source, so its code can be publicly inspected, and the website states that it undergoes independent security audits and continuous automated testing. For teams, the website describes Cryptomator Hub, which offers centralized access management and zero-knowledge encryption, and states that data can be synchronized GDPR-compliant over the cloud with a team when used with a cloud service that has an appropriate DPA. The website also states that the desktop version is free and that the mobile app carries a small fee, and describes the software as a 'pay what you want' proposition.

The website lists compatibility with a range of cloud services and mentions Microsoft Teams integration, and states that it allows access to files from all your devices. Its listed features include client-side encryption, password-based vault access, and file protection regardless of storage location.