There are some clever innovations at work here, too. File transfers are secured with 256-bit AES (Advanced Encryption Standard) and SSL/TLS (Secure Sockets Layer/Transport Layer Security) encryption, although encryption keys are held by Dropbox. The Team plan includes an admin login to manage multiple users and teams, with audit log and granular sharing permissions. However, plans start at $12 per user a month, so it’s not the cheapest solution on this list. Expensive -Less secure (no private keys)ĭropbox is another popular backup and sync solution which has made great strides in providing a robust yet simple business solution.