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
TradeGecko - TradeGecko (now QuickBooks Commerce) is inventory management software for ecommerce and wholesalers - simplify your inventory & order operations with powerful inventory management, multichannel selling, inventory reports and more!
Google Drive - Access and sync your files anywhere
Fishbowl Inventory - Fishbowl offers manufacturing and warehouse management solutions for QuickBooks.
Mega - Secure File Storage and collaboration
Unleashed Software - Unleashed is powerful inventory management software. Accurately manage your inventory online, in real time, with Unleashed. Start your free trial today!