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.
XShare - XShare – File Fast Transfer developed and published by Shalltry Groups.
Dropbox - Online Sync and File Sharing
Zapya - Zaypa is a cross-platform transferring and sharing!
Google Drive - Access and sync your files anywhere
SuperBeam - SuperBeam is a file sharing app that makes moving files across devices much easier by using technologies like NFC and QR codes instead of plug ins. It is one of the fastest was to move files from one device to another.
Mega - Secure File Storage and collaboration