I am and all my life have been a Linux user, I have nothing against Windows or MacOS, I just like Linux, and lately I have been experimenting with Windows in a virtual machine and I don't really know much open source software there apart from the one that is cross-platform like Firefox or Joplin.
At the moment I know:
Flow Launcher: It's a typical rofi style launcher, although I'm not a TWM user I like to just press super and type the first letters of the program I'm looking for to open it.
Lively Wallpaper: A program to have animated wallpapers, in the style of Wallpaper Engine.
Edit: I want to clarify that I read all the comments, I only respond to some because many times I have nothing to contribute to many of them because I don't know what to comment. Thanks to all of you for providing your lists of programs, I will be sure to try as many as I can because they are great, at least I know what to install if I use Windows one day!
For package management I've been really liking scoop.sh
Not everything in there is FOSS but scoop itself is! And you can install neovim, vscodium, bitwarden, Firefox, etc very easily.
How does it compare to chocolatey? Thanks.
it doesn't trigger UAC because the installation directory is different
Some items trigger UAC (installing tailscale, for example)
I love that everying lives in ~/scoop. It's well organized and somewhat portable (until you import the nonportable bucket)