BooleBox

BooleBox is the ultimate Enterprise Collaboration Platform, purposely designed for individuals and businesses that have sensitive information to protect. Unlike other typical public cloud services, the solution offers complete privacy and control over data, including the possibility to set and use Personal Keys to encrypt and unlock files, data controls while sharing and securing both documents and e-mails.

Thanks to its user-friendly protection tools and military level encryption, users will always have their data under control and safe from prying eyes.
Source: https://www.linkedin.com/company/boolebox-inc-/about/