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DiskSmartView vs HDDScan: catalog facts
DiskSmartView	HDDScan
Free Freeware from NirSoft, free to use and redistribute without charge.	Free Freeware with no paid edition.
Windows	Windows
Shows temperature, power-on hours and error rates Supports external USB drives	Surface tests in read, verify and erase modes Shows SMART attributes and drive temperature
Official requirements stop at Windows 10 Supports IDE, SATA and USB disks only	Windows only RAID volumes and USB flash drives get surface tests only
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License not stated
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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