underused windows 10 built in functions:

"I install these on every windows 10 computer"

Not an everyday-use utility, Windirstat can help you in quickly identifying which files take up most space.

I have two program sugestion

I don't understand why VLC is not in this. It is the very first program I download other than google chrome. You did mention it at the end, but VLC deserves a spot

Instead of copying games back and forth just use PrimoCache and dedicate the SSD as L2 cache. As you use various games or applications PrimoCache will automatically take care of the caching. You don't even necessarily need a large SSD for this to be very effective. And if you have a server with most regular hard drives the server version of PrimoCache is the cheapest way to get an effective SSD cache on Windows Server by far. It's rock solid, beats the snot out of Microsoft's disk cache and really blends the line between hard drives and SSDs. Use Optane for your L2 cache and you can turbo an SSD - I can notice my Samsung Evo M2 SSD feeling zippier with Primocache + Optane as my L2 cache.

Searched so long for some of those programms (didnt know they even exists) Years Later i found this Video :D Thanks!

Certainly doesn't improve my work flow, but I definitely love the feel of the customization of rainmeter. It basically just let's you fully customize your desktop, and a lot of user made packs allow even more customizations.

The Everything search engine. Way faster than the slug windows is offering

Voicemeeter is incredibly useful for me, my sound interface has 4 mono inputs but shows up to windows as 2 stereo pairs. VM let's me take one mono channel and create a stereo virtual device so programs like Discord don't have my voice on one side only. It also has a noise gate to quiet down your mic when you aren't actually talking.

super alt f4: Basicly alt+F4 on steroids. Kills applications like the taskmanager does without needing to open the Taskmanager

The first programm is simply amazing and EXACTLY what I needed. Because I enjoy having a lot of workspace I am using a 50" 4k TV as a monitor. Thanks a lot to both you and the developers!!

I create a lot of short clips to show to people, so hearing Avidemux exists feels like how cavemen must have felt when they discovered fire for the first time, since I kinda need something like it as you can't run a webm through Master of Webm, which has a really good encoding efficency.