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
ShareDrop - HTML5 clone of Apple's AirDrop - easy P2P file transfer powered by WebRTC
Google Drive - Access and sync your files anywhere
SHAREit - SHAREit allows you to transfer files and data from your phone to another device without having to rely on WiFi or a data plan.
Mega - Secure File Storage and collaboration
Warpinator - Share files across the LAN. Contribute to linuxmint/warpinator development by creating an account on GitHub.