The Free Software Stack Every New Tech Should Install Tonight

Your toolkit gets you into the machine. Software is what fixes it. And the good news for a new tech’s budget: the best troubleshooting stack on Windows is almost entirely free. These are the seven I’d install tonight, in the order tickets will make you need them — the full list with links lives on the Software page.

1. Ventoy — the boot drive

Covered in its own guide: one USB stick, every ISO, menu on boot. Set it up once and reimaging stops being a logistics problem.

2. Sysinternals Suite — the “why is it slow” answer

Microsoft’s own deep-inspection tools. Process Explorer shows what’s actually eating the CPU (Task Manager lies by omission), Autoruns shows everything that launches at startup — which is where the mystery slowness almost always lives — and TCPView shows who the machine is talking to. Half of “possessed computer” tickets die inside ten minutes of Autoruns.

3. WizTree — the full disk, explained in seconds

“C: drive is full” is a daily ticket. WizTree reads the filesystem’s own index instead of crawling folders, so the answer appears in seconds: it’s always a forgotten Downloads folder, a bloated user profile, or fifty gigs of old Windows update debris. Delete, close ticket, look like a wizard.

4. Advanced IP Scanner — see the network you just walked into

Thirty seconds after connecting, you know every device on the subnet, its IP, and usually its name. Finding the printer someone “lost” or the NAS nobody documented stops being an interview process. When you outgrow it, nmap is waiting — but this covers 90% of small-office reality.

5. Hiren’s BootCD PE — for the machines that won’t boot

Goes on the Ventoy stick, not the laptop. Password resets, disk checks, file rescue from a Windows that won’t start. The ticket says “computer dead, data important” — this is the difference between “let’s see” and “we’ll need to send it out.”

6. Bitwarden — because you’re about to have 200 passwords

Tech work multiplies credentials fast, and the habits you build in month one stick. Free, open source, syncs everywhere. Recommend it to clients too — it’s the password manager you can suggest without a licensing conversation.

7. Termius — the parking-lot SSH client

The free tier syncs your hosts between desktop and phone. The first time you fix a switch from your car because the config was already on your phone, you’ll understand why it made the list.

The pattern

Notice what’s not here: nothing that automates a skill you don’t have yet. Learn to read Autoruns before you trust a “PC optimizer,” and learn what WizTree shows you before you script cleanups. The free stack teaches while it fixes — that’s the real reason it beats the paid shortcuts at this stage. When you’re managing fleets instead of tickets, the MSP-tier software conversation changes.