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.
Galaga - Galaga is a 1981 superb Shoot ‘em up, Action, Single-player, and Arcade video game created by Bandai Namco Studios Inc.
Dropbox - Online Sync and File Sharing
Star Defender 4 - Star Defender 4 is an Arcade, Action, Vertical-scroll, Shoot ‘em up, and Single-player video game created by Awem.
Google Drive - Access and sync your files anywhere
Gradius - Gradius is a 1984 Arcade, Horizontally-Scroll, Single-player, and Shoot ‘em up video game developed and published by Konami.
Mega - Secure File Storage and collaboration