SMART Sniffer
SMART Sniffer: A focused, open-source monitor for SMART data, SSD wear, and multi-machine alerts. Ranked #24 of 30 in Disk Health Monitoring Software by our editors (6.7/10); pricing: Free plan; best for home Assistant-based multi-machine monitoring.
At a glance
- Editor score6.7 / 10
- PricingFree plan
- Best forHome Assistant-based multi-machine monitoring
- Free planYes
- Paid fromFree
- SMART monitoringYes
- Facts checked23 Sep 2026
Where it wins
- Tracks SMART health, SSD wear, temperatures, and drive attributes
- Monitors multiple machines with one agent per machine
- Adds discovery, filesystem checks, notifications, and a REST API
Where it doesn't
- Multi-machine monitoring requires an agent on each machine
- Home Assistant is central to its notification workflow
- Self-hosted operation requires managing the agent and integration
Our verdict on SMART Sniffer
SMART Sniffer is an open-source disk health monitoring integration for Home Assistant, supported by a Go agent that collects drive data through smartmontools. It is intended for people managing ATA, SATA, NVMe, SAS, and SSD storage across Linux, macOS, and Windows machines. The product creates per-drive sensors for SMART health, pass/fail status, temperature, power-on hours, SMART attributes, SSD wear-leveling, and percentage-used diagnostics. Its failure-indicator classification uses NO, MAYBE, YES, and UNSUPPORTED states, giving users a more specific assessment than a single health label.
For multi-machine environments, the architecture is practical but operationally distributed: each machine uses one agent, while mDNS/Zeroconf supports automatic discovery. Home Assistant can issue persistent notifications when monitored health conditions change, and filesystem usage monitoring adds mountpoint-level visibility alongside drive telemetry. The REST API exposes drive summaries and full SMART data, making the monitoring layer available to other software as well. This combination suits a home-lab or household setup that already treats Home Assistant as a central dashboard.
Security and deployment controls are present without changing the product’s self-hosted character. The agent supports optional bearer-token authentication, and downloads can be verified with SHA256. SMART Sniffer is a strong fit for users who want detailed storage diagnostics, SSD wear tracking, drive-failure classification, and machine discovery in an open-source Home Assistant workflow. It is less suitable for buyers seeking a hosted service, a standalone monitoring console, or a deployment that avoids installing and maintaining an agent on every monitored machine.
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SMART Sniffer pricing
SMART Sniffer fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| SMART monitoring | Yes |
| SSD wear tracking | Yes |
| Temperature alerts | Not verified |
| Failure warnings | Yes |
| Remote monitoring | Yes |
| Drives on cheapest plan | Not verified |
| Supported platforms | Linux, macOS, Windows |
| Deployment | Self-hosted |
| Platforms | Linux, macOS, Windows |
| Support | Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 2 integrations: Home Assistant, HACS |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 23 Sep 2026 |
SMART Sniffer integrations
SMART Sniffer lists 2 integrations on its own site.
- Home Assistant
- HACS
Alternatives to SMART Sniffer
- Hard Disk SentinelA full-featured Windows and Linux monitor with diagnostics, alerts, backups, and remote management.9.4
- smartmontoolsBroad, free disk-health monitoring for technical users comfortable with command-line tools.9.2
- DA Drive AnalyzerA low-cost, cross-platform drive monitor with AI predictions and NAS coverage.9.0
See all SMART Sniffer alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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