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CrystalDiskInfo vs smartmontools: catalog facts
CrystalDiskInfo	smartmontools
Free Free and open source under the MIT licence.	Free Free and open source under the GNU GPL version 2.
Windows	Windows, macOS, Linux, Command line
Plain Good, Caution or Bad verdict on top of the raw S.M.A.R.T. table Supports NVMe, many USB enclosures and some Intel RAID setups	Often gives advance warning of disk degradation before data is lost smartd monitors on a schedule and notifies you, rather than waiting to be asked
Windows only A Good verdict does not mean a drive cannot fail tomorrow	Command-line only; interpreting the attribute values takes some learning Attribute meanings vary by manufacturer and are not always documented
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

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