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.
FreedomBox - FreedomBox is a personal server running a free software operating system, with free applications designed to create and preserve personal privacy.
Dropbox - Online Sync and File Sharing
Libre.sh - Implementation of IndieHosters Network based on CoreOS
Google Drive - Access and sync your files anywhere
SlapOS - SlapOS is a decentralized Cloud Computing technology.
Mega - Secure File Storage and collaboration