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
Synology DiskStation Manager - DiskStation Manager is a data storage platform that comes with a completely private collaboration suite.
Google Drive - Access and sync your files anywhere
CTERA - CTERA is the global leader in edge-to-cloud file services.
Mega - Secure File Storage and collaboration
Nutanix - Nutanix is a virtualized datacenter platform that provides disruptive datacenter infrastructure solutions for implementing enterprise-class.