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Hard Disk SentinelSeaTools
Freemium

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

 Free

Free download from Seagate.

Windows, Linux Windows
  • 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 diagnostic tool from a drive manufacturer
  • Quick health check for hard drives and SSDs
  • The free version is limited; most features need the paid Professional edition
  • Aimed mainly at Seagate drives
  • Offers diagnostics rather than repair or recovery
Downloadable app Downloadable app
Closed source Closed source
License not stated License: Proprietary
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 24, 2026

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