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.
AutoBuy - AutoBuy is an all-in-one payment processing and e-commerce solution.
Dropbox - Online Sync and File Sharing
Sellix - Sellix is a powerful ecommerce platform that powers your entire digital business.
Google Drive - Access and sync your files anywhere
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Mega - Secure File Storage and collaboration