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.
SAP ERP - SAP ERP is enterprise resource planning software developed by the German company SAP SE.
Dropbox - Online Sync and File Sharing
QuickBooks Online - QuickBooks Online is a Cloud Accounting for small business that can be used on iPad, mobile phone or computer to do invoicing, billing, run reports, or even pay employees online.
Google Drive - Access and sync your files anywhere
QuickBooks Pro - Learn why QuickBooks Desktop Pro is the desktop accounting software 94% of users would recommend to a friend. Learn about features, pricing and what's new for 2020.
Mega - Secure File Storage and collaboration