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GSmartControl vs PassMark DiskCheckup: catalog facts
GSmartControl	PassMark DiskCheckup
Free Free and open source.	Free Free to download and use.
Windows, Linux	Windows
Highlights SMART anomalies automatically Runs drive self-tests from the interface	Shows SMART values alongside their thresholds Predicts when an attribute may cross its threshold
Depends on smartmontools being installed Beware of a phishing site using a similar name	Windows only Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License: Proprietary
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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