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.
Dropbox - Online Sync and File Sharing
CloudEndure - CloudEndure provides cloud migration and cloud disaster recovery for any application.
Google Drive - Access and sync your files anywhere
N2WS Cloud Protection Manager - N2WS is the leading Enterprise-class disaster recovery, and backup solution specifically made for Amazon EC2 servers.
Mega - Secure File Storage and collaboration
VSquare - Vsquare is a Vmware and Hyper-V-based data protection, disaster recovery, and business continuity solution that provides businesses with a complete, affordable solution for protecting their data and ensuring continuity in the event of a disaster.