Best Hardware Diagnostic Software in 2026
Updated
In short: smartmontools is ranked #1 of 25 as of 4 October 2026, ahead of stress-ng and Hard Disk Sentinel. The best-ranked option with a free plan is stress-ng. The lowest first paid tier on this page is Eurosoft Pc-Check at $8.75/mo.
When troubleshooting a computer, diagnostic software can help check its components and report findings. Compare disk health checks, memory testing, and GPU testing, and consider whether you need stress testing or bootable diagnostic media. Platform support and diagnostic reports offer further ways to assess fit. PC-Doctor Toolbox, Hard Disk Sentinel, and Ultimate Boot CD lead the 22 ranked entries, followed by smartmontools and HP PC Hardware Diagnostics. Free-plan availability and paid-from pricing add cost context. Start with the hardware you need to examine, then use the listed checks and reporting options to compare what each product supports.
25 hardware diagnostic software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 smartmontools Top pick · 7.2 Free plan · Free
#2 stress-ng Runner-up · 7.2 Free plan · Free
#3 Hard Disk Sentinel Also great · 7.1 Free plan · Free- Free plan LinuxmacOSWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan AndroidLinuxmacOSself-hostedWindows
- Free plan
- Yes
- Platform support
- multi-platform
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial LinuxWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Platform support
- multi-platform
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- No
RecognisedDocumentedFree planPlatforms - Free plan WebWindows
- Free plan
- Yes
- Platform support
- windows
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Windows
- Free plan
- Yes
- Platform support
- multi-platform
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Linuxself-hostedWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Linuxself-hostedWindows
- Free plan
- Yes
- Platform support
- multi-platform
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Windows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
- Platform support
- windows
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- Yes
RecognisedDocumentedFree planPlatforms - Linuxself-hostedWindows
- Free plan
- No
- Platform support
- multi-platform
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- Yes
RecognisedDocumentedFree planPlatforms$8.75/mofirst paid tier About Eurosoft Pc-CheckVisit site - Windows
- Free plan
- No
- Platform support
- multi-platform
- Stress testing
- Yes
- Memory testing
- Yes
- Disk health checks
- Yes
RecognisedDocumentedFree planPlatforms$21/mofirst paid tier About BatteryMonVisit site - Free plan LinuxmacOSself-hostedWindows
- Free plan
- Yes
- Platform support
- multi-platform
- Memory testing
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- Yes
- Platform support
- multi-platform
- Stress testing
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
- Platform support
- windows
- Stress testing
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- No
RecognisedDocumentedFree planPlatforms$29.95/mofirst paid tier About HD Tune ProVisit site - Windows
- Free plan
- Yes
- Platform support
- windows
- Stress testing
- Yes
- Memory testing
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Linux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- No
- Platform support
- windows
- Stress testing
- Yes
- Memory testing
- Yes
RecognisedDocumentedFree planPlatforms - Android
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms
Is your app 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 Everything Xiaomi?
smartmontools is ranked #1 of 25 with a score of 7.2. stress-ng is second and Hard Disk Sentinel third.
How many of these have a free plan?
10 of the 25 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: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.