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.
Dokmee - Office Gemini provides document management solutions, from capture to document management.Dokmee offers easy and secure access.
Dropbox - Online Sync and File Sharing
bSource - Enterprise Content Management & File Sharing App for iPad
Google Drive - Access and sync your files anywhere
ShareFile - Secure file sharing and sync
Mega - Secure File Storage and collaboration