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O&O DiskImage vs Rescuezilla: catalog facts
O&O DiskImage	Rescuezilla
Paid Commercial software sold by O&O Software, with a separate Enterprise edition for…	Free Free and open source under the GPL.
Windows	Linux
Full system images as well as file and folder backups Aimed at recovery after ransomware, disk failure or a crash	Images and backups are fully interchangeable with Clonezilla's in both directions Point-and-click interface instead of Clonezilla's text menus
Windows only Paid, closed-source software	You boot into it rather than running it from your desktop Whole-drive imaging is the wrong approach for everyday file backups
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.