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GSmartControl vs SeaTools: catalog facts
GSmartControl	SeaTools
Free Free and open source.	Free Free download from Seagate.
Windows, Linux	Windows
Highlights SMART anomalies automatically Runs drive self-tests from the interface	Official diagnostic tool from a drive manufacturer Quick health check for hard drives and SSDs
Depends on smartmontools being installed Beware of a phishing site using a similar name	Aimed mainly at Seagate drives Offers diagnostics rather than repair or recovery
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	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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