Xemu
https://xemu.app
There currently is no original Xbox emulator in the repos.
GPLv2
https://github.com/mborgerson/xemu/archive/refs/tags/build-202110302121.zip
That link is the latest version, but the zip file name is a bit different from a standard version. If that is a problem I'll talk to the devs on their discord.
Unless they improve their documentation to better communicate build instructions, dependencies, etc. I won't be accepting this for inclusion, as it won't be entirely clear what else we would be accepting alongside this.
You are welcome otherwise to use their flatpak.
I'll make a issue on their github linking to here. Though just for clarification what do you need clarified?
The link livingsilver94 provided is usually how i see most projects list their build instructions & dependencies. So I'm a bit confused.