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.
Ambition - Increase employee productivity in a fun, sustainable way. Fantasy Football adapted for the work environment
Dropbox - Online Sync and File Sharing
Spinify - Sales gamification to motivate, engage and celebrate your teams performance.
Google Drive - Access and sync your files anywhere
LevelEleven - LevelEleven is a sales performance optimization platform.
Mega - Secure File Storage and collaboration