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.
Acronis Backup and Recovery - Acronis Backup is a data recovery solution that offers more ways of storing and recovering drives, folders and files as compared to other similar solutions.
SpiderOak - SpiderOak makes it possible for you to privately store, sync, share & access your data from everywhere.
SolarWinds Backup - Modern server backup software
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
MSP360 - MSP360 (CloudBerry) Backup is a platform that comes with a managed backup service and delivers data protection to users.