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Head-to-head · Disk Diagnostic Software

smartmontools vs HDAT2

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score smartmontools #3 in Disk Diagnostic Software 9.0/10 Free plan Free plan✓ 0 of 5 features Visit smartmontools
HDAT2 #7 in Disk Diagnostic Software 8.1/10 Free plan Free plan✓ 4 of 5 features Visit HDAT2

smartmontools leads on 0 checks, HDAT2 on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoresmartmontools · 9.0/10
  • Free planboth
  • Most featuresHDAT2 · 4 of 5

smartmontools scores higher on our rubric for disk diagnostic software: 9.0 against 8.1 out of 10; our editors rank them #3 and #7.

smartmontools is the better fit for open-source SMART monitoring across platforms. HDAT2 is the better fit for bootable low-level device diagnostics.

  • smartmontools fits best

    Open-source SMART monitoring across platforms

  • HDAT2 fits best

    Bootable low-level device diagnostics

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Side by side

Feature smartmontools 9.0/10 Visit ↗ HDAT2 8.1/10 Visit ↗
At a glance
Editor score 9.0 8.1
Ranking #3 in Disk Diagnostic Software #7 in Disk Diagnostic Software
Best for Open-source SMART monitoring across platforms Bootable low-level device diagnostics
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Desktop
Platforms Windows, macOS, Linux Windows
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features smartmontools 0/5 · HDAT2 4/5
Bad-sector scan Not checked yet ✓ (best)
Read/write testing Not checked yet ✓ (best)
Surface scan Not checked yet Not checked yet
Bootable media Not checked yet ✓ (best)
SMART tests Not checked yet ✓ (best)
Specs
Platform Not checked yet Dos
Maximum drive size Not checked yet Not checked yet
Our review
Pros
  • Reads SMART data across ATA/SATA, SCSI/SAS, and NVMe devices
  • Supports Windows, macOS, Linux, BSD variants, Solaris, and more
  • Offers polling, self-tests, alerts, logging, and temperature thresholds
  • Tests and repairs bad sectors across many storage device types
  • Includes SMART, read/write/compare, filesystem, and sector tests
  • Boots from ISO, IMG, or USB-compatible media without a paid plan
Cons
  • Command-line workflows may not suit GUI-first teams
  • Configuration is required for daemon polling and email warnings
  • Provides no AI features for automated analysis
  • The main program requires real DOS and boot media
  • Windows downloads are demo versions rather than the main program
  • Some SMART functions depend on compatible ATA, SATA, SCSI, or NVMe drives
Our verdict

smartmontools is an open-source package for inspecting and monitoring storage-device health. It combines smartctl, a command-line utility for reading and controlling SMART data, with smartd, a daemon that periodically polls drives. The…

Read the review →

HDAT2 is a freeware disk-testing and diagnostic utility for users who need low-level storage-device inspection from bootable media. It supports ATA, ATAPI, SATA, NVMe, SSD, SCSI, and USB devices, with functions for bad-sector testing and…

Read the review →
  1. smartmontoolsDisk Diagnostic Software 9.0Free plan
  2. HDAT2Disk Diagnostic Software 8.1Free plan

Strengths and trade-offs

  • smartmontools — where it wins

    • Reads SMART data across ATA/SATA, SCSI/SAS, and NVMe devices
    • Supports Windows, macOS, Linux, BSD variants, Solaris, and more
    • Offers polling, self-tests, alerts, logging, and temperature thresholds

    Where it doesn't

    • Command-line workflows may not suit GUI-first teams
    • Configuration is required for daemon polling and email warnings
    • Provides no AI features for automated analysis

  • HDAT2 — where it wins

    • Tests and repairs bad sectors across many storage device types
    • Includes SMART, read/write/compare, filesystem, and sector tests
    • Boots from ISO, IMG, or USB-compatible media without a paid plan

    Where it doesn't

    • The main program requires real DOS and boot media
    • Windows downloads are demo versions rather than the main program
    • Some SMART functions depend on compatible ATA, SATA, SCSI, or NVMe drives

More comparisons

All disk diagnostic software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update