Also, Notepad++ [2] is one of those unseen programs that really stands out.
On my work laptop the company installed "Snagit" which seems to do the same thing - it's extremely useful!
ProcessExplorer is indispensable for me as well.
I use Sublime a lot for the multi cursor support (just highlight a repeating element and press Ctrl-D … there are more advanced controls but that covers 80% of what you need.
Meld is my favorite cross platform diff tool. I use it for git merge conflicts, but also just for so many general purposes tasks in life.
010 editor is amazing for editing very very large documents/files. Only app I know that can gracefully work with multi GB text files.
AgentRansack / FileLocator Pro I paid for a technicians license I loved it so much. Not sure if Everything is a complete standin, it might be.
* Bvckup for replicating data across different drives, not free but one of the best designed Windows tools and very worth the price https://bvckup2.com/
Basically the same thing, but Powertoys Run was always slowish while ueli is very snappy. It also integrates with Everything.
It's been a while since it was updated last, but since it works, does that matter?
Aside from that:
PowerToys (I mostly use fancy zones and file locksmith, others are useful too).
Anything for getting recursive folder statistics (I use TreeSize, WinDirStat is also popular).
ClickMonitorDDC if you need to change on-board monitor settings a lot or want to automate it. Sadly seems to have been abandoned.
I use vscode for anything plaintext related (text editing, file/folder diffs, git history). It works decently as a terminal too.
WSL
A nice CAS calculator. wxMaxima is the closest I've found to what I want.
Together with Autohotkey and StrokeIt. StrokeIt lets me navigate back and forth with left/right mouse gesture (right mouse button), close tab/window (depending on application category) by gesturing up, minimize by gesturing down. I couldn't live without it.