Best Disk Diagnostic Software in 2026
Updated
In short: Hard Disk Sentinel is ranked #1 of 24 as of 3 October 2026, ahead of DiskMaster and smartmontools. The best-ranked option with a free plan is DiskMaster. The lowest first paid tier on this page is HD Tune Pro at $29.95/mo.
24 disk diagnostic software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Bad-sector scan | |
|---|---|---|---|---|---|---|---|---|
| 1 |  Hard Disk Sentinel | 7.5 | RecognisedAPIDocumented | Free | No | 22 one-time | — | View |
| 2 |  DiskMaster | 7.4 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 3 |  smartmontools | 7.4 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 4 | Victoria HDD/SSD | 7.2 | RecognisedAPIDocumented | Free | Yes | — | Yes | View |
| 5 |  HDAT2 | 7.0 | RecognisedAPIDocumented | Free | Yes | — | Yes | View |
| 6 |  STB Suite | 6.7 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 7 | GSmartControl | 6.5 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 8 | HDDScan | 6.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 9 |  DRevitalize | 6.2 | RecognisedAPIDocumented | Free | — | — | Yes | View |
| 10 |  Active@ Hard Disk Monitor | 6.1 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 11 |  Ariolic Disk Scanner | 6.1 | RecognisedAPIDocumented | — | Yes | — | Yes | View |
| 12 |  MHDD | 6.1 | RecognisedAPIDocumented | Free | Yes | — | Yes | View |
| 13 |  Avidemux | 6.1 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 14 |  Macrorit Disk Scanner | 6.0 | RecognisedAPIDocumented | — | Yes | — | Yes | View |
| 15 |  StableBit Scanner | 5.9 | RecognisedAPIDocumented | — | No | 29.95 one-time | — | View |
| 16 |  HD Tune Pro | 5.9 | RecognisedAPIDocumented | $29.95/mo | No | 29.95 one-time | — | View |
| 17 | Stellar Drive Monitor | 5.9 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 18 |  ValiDrive | 5.9 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 19 |  HDD Regenerator | 5.7 | RecognisedAPIDocumented | — | No | 49.99 one-time | Yes | View |
| 20 |  SpinRite | 5.5 | RecognisedAPIDocumented | — | No | 89 one-time | Yes | View |
| 21 |  nvm | 5.5 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 22 | DriveDx | 5.4 | RecognisedAPIDocumented | — | No | 24.99 one-time | — | View |
| 23 |  Atola Disk Recycler | 5.0 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 24 |  SMARTHDD | 4.8 | RecognisedAPIDocumented | — | No | 14.95 one-time | — | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which disk diagnostic software is ranked first on Inferse?
Hard Disk Sentinel is ranked #1 of 24 with a score of 7.5. DiskMaster is second and smartmontools third.
How many of these have a free plan?
9 of the 24 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, HD Tune Pro has the lowest first paid tier we found: $29.95/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.