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
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Google Drive - Access and sync your files anywhere
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
Mega - Secure File Storage and collaboration
PiPifier - PiPifier is a macOS 10.