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PassMark DiskCheckup vs Hard Disk Sentinel: catalog facts
PassMark DiskCheckup	Hard Disk Sentinel
Free Free to download and use.	Freemium A limited free version exists. The Professional edition is a paid licence.
Windows	Windows, Linux
Shows SMART values alongside their thresholds Predicts when an attribute may cross its threshold	Health and estimated lifetime per drive rather than raw S.M.A.R.T. values Sees drives behind many USB enclosures and RAID controllers
Windows only Closed source	The free version is limited; most features need the paid Professional edition
Downloadable app	Downloadable app
Closed source	Closed source
License: Proprietary	License not stated
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 October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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