For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Code42 - Code42 is a SaaS solution for enterprises that secures all user data on one secure platform, leaving you and your business secure in the knowledge that both your employee's and customer's data is protected. Read more about Code42.
Dropbox - Online Sync and File Sharing
Druva inSync - Your device may be lost, but your data isn’t with Druva inSync™ Integrated backup, eDiscovery and compliance monitoring.
Google Drive - Access and sync your files anywhere
Carbonite - Unlimited online backup for one flat fee. Free trial, no credit card required.
Mega - Secure File Storage and collaboration