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smartmontools vs nvme-cli: catalog facts
smartmontools	nvme-cli
Free Free and open source under the GNU GPL version 2.	Free Free and open source.
Windows, macOS, Linux, Command line	Linux, Command line
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	Direct access to NVMe health and SMART logs Vendor-specific plugins
Command-line only; interpreting the attribute values takes some learning Attribute meanings vary by manufacturer and are not always documented	Linux only Command line only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	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 24, 2026

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