HDD Health Monitor
5.9#21 in disk health monitoring softwareFree planFree planWindows
VisitHDD Health Monitor vs SMART Sniffer
SMART Sniffer
7.5#1 in disk health monitoring softwareFree planFree planWebAPILinuxmacOS
VisitWhat both publish
| Fact | HDD Health Monitor | SMART Sniffer |
|---|---|---|
| Purpose | Reads raw S.M.A.R.T. data from physical drives and presents drive health information, warnings, and historical trends. | SMART Sniffer monitors disk health and reports early warning signs to Home Assistant. |
| USB limitation | S.M.A.R.T. data may be unavailable when a USB enclosure bridge does not support pass-through or a supported protocol. | USB enclosures that block SMART passthrough are marked UNSUPPORTED with Health: Unknown. |
HDD Health Monitor plans
- HDD Health MonitorFree
SMART Sniffer plans
- Open sourceFree
- SMART SnifferFree
Pick HDD Health Monitor if…
It suits Windows users who want ongoing health and temperature alerts for one or more physical drives. It may also help users who want to review saved S.M.A.R.T. history or inspect drive attributes.
Pick SMART Sniffer if…
SMART Sniffer suits Home Assistant users who want disk-health warnings across Linux, macOS or Windows machines. It may also suit users who want optional filesystem-usage reporting alongside drive monitoring.