Best Hardware Diagnostic Software in 2026
Updated
In short: PC-Doctor Toolbox is ranked #1 of 22 as of 3 October 2026, ahead of HP PC Hardware Diagnostics and Ultimate Boot CD. The best-ranked option with a free plan is Ultimate Boot CD. The lowest first paid tier on this page is Eurosoft Pc-Check at $8.75/mo.
22 hardware 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 | Platform support | |
|---|---|---|---|---|---|---|---|---|
| 1 |  PC-Doctor Toolbox | 7.5 | RecognisedAPIDocumented | Free | Yes | — | windows | View |
| 2 |  HP PC Hardware Diagnostics | 7.2 | RecognisedAPIDocumented | — | Yes | — | windows | View |
| 3 | Ultimate Boot CD | 7.2 | RecognisedAPIDocumented | Free | Yes | — | multi-platform | View |
| 4 |  Hard Disk Sentinel | 7.2 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 5 |  smartmontools | 7.1 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 6 | Eurosoft Pc-Check | 6.8 | RecognisedAPIDocumented | $8.75/mo | No | — | multi-platform | View |
| 7 |  MemTest86 | 6.7 | RecognisedAPIDocumented | — | Yes | — | multi-platform | View |
| 8 |  HDAT2 | 6.6 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 9 |  stress-ng | 6.6 | RecognisedAPIDocumented | Free | Yes | — | multi-platform | View |
| 10 |  MemTest86+ | 6.5 | RecognisedAPIDocumented | Free | Yes | — | multi-platform | View |
| 11 | GSmartControl | 6.1 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 12 | HDDScan | 6.0 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 13 |  FurMark | 5.9 | RecognisedAPIDocumented | — | Yes | — | windows | View |
| 14 |  Prime95 | 5.8 | RecognisedAPIDocumented | — | Yes | — | multi-platform | View |
| 15 |  MemTest64 | 5.7 | RecognisedAPIDocumented | — | Yes | — | windows | View |
| 16 |  Intel VTune Profiler | 5.7 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 17 |  HD Tune Pro | 5.4 | RecognisedAPIDocumented | $29.95/mo | No | — | — | View |
| 18 | Speccy | 5.4 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 19 |  HardInfo2 | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 20 |  3DP Chip | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 21 |  Karhu RAM Test | 5.1 | RecognisedAPIDocumented | — | No | — | windows | View |
| 22 |  Piston | 5.0 | RecognisedAPIDocumented | — | Yes | — | — | 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 hardware diagnostic software is ranked first on Inferse?
PC-Doctor Toolbox is ranked #1 of 22 with a score of 7.5. HP PC Hardware Diagnostics is second and Ultimate Boot CD third.
How many of these have a free plan?
8 of the 22 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Eurosoft Pc-Check has the lowest first paid tier we found: $8.75/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.