Duplicacy - A new generation cross-platform cloud backup tool
UltraISO - CD image files are easily created with UltraISO.
Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.
PowerISO - PowerISO is a virtual drive that allows users to encode, burn, mount, and even encrypt CDs, DVDs, and BDs. The software can be downloaded from many platforms and sites online.
UrBackup - UrBackup is a open source client/server backup system, that through a combination of image and file...
WinCDEmu - WinCDEmu is an open-source CD/DVD/BD emulator.