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HDDScan vs nwipe: catalog facts
HDDScan	nwipe
Free Freeware with no paid edition.	Free The open-source application is available without a license fee.
Windows	Linux
Surface tests in read, verify and erase modes Shows SMART attributes and drive temperature	Parallel drive erasure with a text interface
Windows only RAID volumes and USB flash drives get surface tests only	Erasure destroys the selected drives' contents.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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