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DiskSmartView vs GSmartControl: catalog facts
DiskSmartView	GSmartControl
Free Freeware from NirSoft, free to use and redistribute without charge.	Free Free and open source.
Windows	Windows, Linux
Shows temperature, power-on hours and error rates Supports external USB drives	Highlights SMART anomalies automatically Runs drive self-tests from the interface
Official requirements stop at Windows 10 Supports IDE, SATA and USB disks only	Depends on smartmontools being installed Beware of a phishing site using a similar name
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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