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.
Officetrax - Cloud-based facility management - more than just CMMS
Dropbox - Online Sync and File Sharing
Oracle NetSuite - NetSuite is the leading integrated cloud business software suite, including business accounting, ERP, CRM and ecommerce software.
Google Drive - Access and sync your files anywhere
Company Combiner - Combine Mulitple Companies in Microsoft Dynamics GP(R)
Mega - Secure File Storage and collaboration