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
Tilda Publishing Animations - Free tool for creating interactive websites without coding
Google Drive - Access and sync your files anywhere
XPRS - Free website builder - making web design like Lego™. No code
Mega - Secure File Storage and collaboration
W3C Mobile Checker - Make websites work better on mobile devices