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GNU ddrescue vs DMDE: catalog facts
GNU ddrescue	DMDE
Free Free and open source, part of the GNU Project.	Freemium Free edition recovers up to 4000 files per directory; paid licences unlock the…
macOS, Linux, Command line	Windows, macOS, Linux
Handles read errors so as little data as possible is lost Scrapes good sectors out of partially readable blocks	Reads many file systems regardless of host OS Rebuilds directory trees after formatting or partition damage
Command-line only, with no graphical interface Copies raw blocks and does not recover individual deleted files	Free edition limited to 4000 files per directory Disk editor and advanced options assume some technical knowledge
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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