A lot of open source projects do have windows versions, and the big projects that come to mind like blender or Firefox definitely do… but there’s a a lot of little pieces of software that don’t. One example that comes to mind for me is the Dino XMPP client… Linux only for now, unfortunately!
I have no idea as I’ve never been a windows user, haha. Dino is one of the examples I know about though, because I know I can’t recommend it to windows users.
WSL is Windows Subsystem for Linux. It allows you to use Linux from within Linux. Though there's probably some major thing I'm missing which makes it fundamentally different from just running a VM.
Guitarix was one of those for me. I know there are better virtual amps on windows but I quite enjoyed guitarix for its open and free nature. Plus audio routing on windows is a nightmare.
Yeah, last time I checked it suggested you just use a live install if you wanted to use it lol. I don't think it even works in macos despite macos having Macports, quartzx11 and jackctl support.