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
Bashupload - Upload files from command line to share between servers
Google Drive - Access and sync your files anywhere
BlackHole File Transfer - Blockchain-based file transfer. Designed for everyday use.
Mega - Secure File Storage and collaboration
FilePizza - Open source application used to transfer file via WebRTC and WebTorrent.