Wikipedia
Tresorit
Tresorit is an online cloud storage service based in Switzerland and Hungary that emphasizes enhanced security and data encryption for Businesses. The service starts at 12.50 EUR/Month/User/1000GB and there is a 14-day trial. The Business version offers up to 1Tb of storage space per user and extra security features such as DRM, granular access levels and other functions which aim to create a safer collaborative environment. Tresorit has been likened to a high-security alternative to Dropbox.
Tresorit's service is accessible through client desktop software, web-based application and mobile apps. Currently, the software is available for Windows, Mac, Android, Windows Phone 8, iOS, BlackBerry OS and Linux.