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DiskSmartViewHard Disk Sentinel
Free

Freeware from NirSoft, free to use and redistribute without charge.

 Freemium

A limited free version exists. The Professional edition is a paid licence.

Windows Windows, Linux
  • Shows temperature, power-on hours and error rates
  • Supports external USB drives
  • Health and estimated lifetime per drive rather than raw S.M.A.R.T. values
  • Sees drives behind many USB enclosures and RAID controllers
  • Official requirements stop at Windows 10
  • Supports IDE, SATA and USB disks only
  • The free version is limited; most features need the paid Professional edition
Downloadable app Downloadable app
Closed source Closed source
License: Freeware License not stated
Not stated if an account is needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 8, 2026

Checked September 22, 2026

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