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
Shopify Upsell Bundles App - Shopify app to Create Bundles, Packages and Sets with discounts by the most simple and efficient...
Google Drive - Access and sync your files anywhere
UpSellit - UpSellit is a site abandonment platform, providing solutions and insights from the entrance page to checkout.
Mega - Secure File Storage and collaboration
ReConvert - Page builder to design thank you page that cross sell & upsell