For video recording I use OBS and for zip files I use 7-Zip

1. OBS Studio, or even Xbox Game Bar (built-in, but might be disabled at your work PC)
2. ShareX
3. 7-Zip

To be fair, these tools are all already built-in

1. Xbox Game Bar (Win+G)
2. Windows screenshot (Win+S / Win+Shift+s)
3. File Explorer (Win+E) can handle .zip, even preview them quite nicely.

I realise these are not open source (and others have already given great open-source options I would give, as well). But you're using Windows already, so why not use Windows?

I have to use Windows on my work computer and I am finding it hard to get FOSS applications on Windows that can do stuff like

The Gold standard in the screen recording world is OBS. It's not only available for Linux, but also for Windows and, well, is the gold standard. If you ask the question if OBS can do this-or-that regarding screen recording, the answer generally is yes (or "yes, via plugin"). Just use OBS on all platforms, it's clearly the most mature screen recording tool out there.

LibreOffice for replacing Microsoft Office

For screenshots, I've been pushing Greenshot as it has built in editing capabilities and has been quite stable on Windows 11

For .zip files, I still stick with 7-zip. It does what it does and has never given me issue.

For screenshots I recommend Greenshot. Simple to use and good annotation tools.

For screenshots look at Greenshot.

ShareX and .7z

Check out scoop and chocolatey

For simple screen recording, I could only find not-so-simple OBS that let me record a part of a screen. In the end it's a good and reliable solution once you set up and save the local area I want to record. Not so spontaneous, but solid.

I edit the videos in KDEnlive Windows install, which is excellent for this work. I have a smooth process and create many videos quickly.

For screenshot, you can use Flameshot which do have a Windows version and even a macOS version:

https://flameshot.org/#download

@Subject6051 Most of apps famous in linux are available on windows.

Funny part is while joining Linux we searched alternatives and now for leaving it we need alternatives 😅

3. Windows has built in simple zip manager. If you need more, go with 7-zip as others suggested.

Windows comes with pretty good tools for these already.

1. Game Bar can do this and is built in, or ShareX for short clips

2. Snipping tool is pretty full featured and built in. ShareX is also good.

3. Windows handles ZIP natively.

Pictures: Snagit. Videos: Camtasia.

WSL

Doesn't the snipping tool also allow video capture now?

flameshot for screenshots

There's this: https://github.com/lextrack/Simple-Screen-Recorder

Disclaimer: I haven't touched Windows in at least a decade.