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GSmartControl vs StableBit Scanner: catalog facts
GSmartControl	StableBit Scanner
Free Free and open source.	Paid Costs $29.95, with a fully functional 30-day free trial.
Windows, Linux	Windows
Highlights SMART anomalies automatically Runs drive self-tests from the interface	Continuous background surface scans of all drives Health monitoring with alerts when parameters change
Depends on smartmontools being installed Beware of a phishing site using a similar name	Windows only Paid after the 30-day trial
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License: Proprietary
No account needed	Not stated if an account is 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.