System & Hardware: what to install, and why
The tools you reach for when a machine is slow, full, too hot, or about to be reinstalled. Most of these are diagnostic rather than corrective: they tell…
What this category is for
The tools you reach for when a machine is slow, full, too hot, or about to be reinstalled. Most of these are diagnostic rather than corrective: they tell you what is happening so you can make one informed change, instead of running a cleaner that changes thirty things at once.
What we filter on
- Reports what it finds without changing anything until you say so.
- No automatic optimisation, no scheduled scan, no startup resident by default.
- A readable explanation of the number on screen. A SMART warning you cannot interpret is not useful.
- Free for the use case described, with the personal-use exceptions labelled.
The 8 programs, compared
The table below is generated from the same directory data as the main list. Licence wording matters here: free for personal use is not the same as free for a work machine, and source-available is not the same as open source. Every link opens the publisher's own site.
| Program | Licence / price | Platforms | Why it is on the list |
|---|---|---|---|
| Rufus Publisher's site ↗ | Free · Open source | Windows | Writes a Windows or Linux ISO to a USB stick in a couple of minutes, faster than most vendor tools, and can bypass the Windows 11 TPM and account requirements if you ask it to. No install needed. |
| Ventoy Publisher's site ↗ | Free · Open source | Windows, Linux | Format a USB stick once, then just copy ISO files onto it and pick one from a boot menu. Replaces the whole reformat-burn-reformat cycle. Worth the twenty minutes of learning if you install systems regularly. |
| WizTree Publisher's site ↗ | Free for personal use | Windows | Reads the master file table directly and shows you what is eating your disk in seconds, not minutes, with a treemap view. The fastest way to find the 40 GB you did not know you had. |
| HWiNFO Publisher's site ↗ | Free for personal use | Windows | Reads every temperature, fan speed, voltage and power draw your hardware exposes, and logs it over time. The reference tool for diagnosing a laptop that throttles or a fan that will not stop. |
| CPU-Z Publisher's site ↗ | Free · Closed source | Windows, Android | Tells you exactly which CPU, motherboard and memory you actually have, including real memory timings rather than the marketing numbers. Useful when buying a used machine or checking a second-hand part. |
| CrystalDiskInfo Publisher's site ↗ | Free · Open source | Windows | Shows the SMART health of every drive in plain language, so you get a warning before a disk dies instead of after. Check any second-hand laptop with this before you hand over money. |
| CrystalDiskMark Publisher's site ↗ | Free · Open source | Windows, macOS | Measures real read and write speed on a drive so you can tell whether that new SSD is actually performing as advertised. Run it once after any upgrade, then forget about it. |
| Revo Uninstaller Free Publisher's site ↗ | Free + paid tiers | Windows | Removes an application and then hunts down the leftover files and registry keys Windows leaves behind. Use the free version for the occasional stubborn uninstall, not as a weekly cleaning ritual. |
If you only install one
Rufus. A bootable USB is the one task that has no built-in Windows equivalent and cannot be improvised. Rufus does it in a single window, checks the image, and asks before touching a drive. On a machine you are about to reinstall, it is the tool that starts everything else.
Its Free · Open source licence and Windows support are listed in the table above. The rest of this category exists because the right answer changes with the job, not because the other entries are filler.
The trade-offs
| Instead | What changes |
|---|---|
| Ventoy | Better if you regularly boot several different images: format the stick once, then copy ISOs onto it. |
| WizTree | Shows where the disk space went in seconds by reading the filesystem directly, which is a far more useful first step than deleting temp files blindly. |
| CrystalDiskInfo | The quickest check on whether a drive is failing before you trust it with a backup. |
Mistakes we see
- Choosing the wrong disk in a bootable-USB tool. Both Rufus and Ventoy will erase the target; check the size and the drive letter before clicking start.
- Reading a benchmark number as a health result. CrystalDiskMark measures speed; CrystalDiskInfo reads health attributes. They answer different questions.
- Running an uninstaller that aggressively removes leftover registry keys on every removal. The benefit is small and the failure mode is a broken shared component.
Questions people ask
Should I install all eight of these at once?
No. Keep Rufus and a disk-space tool available; install hardware monitors only when you are diagnosing something.
Is a SMART warning always fatal?
No, but it is a reason to make a backup before doing anything else, and to replace the drive rather than investigate for a week.
Where to go next
These guides use tools from this category:
- Setting up a new Windows PC: the order that actually works
- Before and after a clean reinstall: the checklist
- How to spot a bundled installer before it is too late
- Getting a few more years out of an older PC
Or continue through the other categories:
- Browsers — 4 programs
- Files & Organisation — 6 programs
- Media, Recording & Capture — 10 programs
- Graphics & Design — 7 programs
- Documents & Notes — 8 programs
- Communication — 6 programs
- Privacy & Security — 10 programs
- Developer Tools — 12 programs
- Backup & Sync — 5 programs
- Network & Remote — 6 programs
How to read this page. How to read this page. Platform, licence and publisher details come from our directory data. Where an independent review, audit or survey is mentioned, it is summarised in our own words with the source named and linked; our /sources page sets out that policy. The recommendation, the trade-offs and every 'skip it if' line are our editorial judgement. We do not run benchmarks, publish measured performance figures or host installers, and every download link goes to the publisher's own site. If a detail is out of date, our About page explains how to tell us.