Dropbox - Online Sync and File Sharing

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.

Google Drive - Access and sync your files anywhere

Backblaze - Backblaze's remote backup automatically backs up your data to our secure datacenter.

ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.

ManageWP - ManageWP is a service for bloggers, site owners and web based companies helping them manage multiple WordPress sites from one dashboard.