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.
CloudEndure - CloudEndure provides cloud migration and cloud disaster recovery for any application.
Dropbox - Online Sync and File Sharing
Carbonite - Unlimited online backup for one flat fee. Free trial, no credit card required.
Google Drive - Access and sync your files anywhere
CrashPlan - CrashPlan for Small Business backup software offers the best way to back up and store business & enterprise data securely - offsite, onsite & online in the Cloud.
Mega - Secure File Storage and collaboration