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.
Codezero - Collaborative Local Microservices Development
Dropbox - Online Sync and File Sharing
LeadMD - LeadMD is the revenue performance consultancy that cuts through the BS by making your vision actionable and your outcomes measureable
Google Drive - Access and sync your files anywhere
Sirius - An open-source clone of Siri from UMICH
Mega - Secure File Storage and collaboration