[Teifion]

Commandline tools yes (though that's not it's strong point). Desktop GUIs could be done though I've not looked into it, if I were then I'd look at making a desktop Electron app and use something like Phoenix LiveView with that to create the GUI.

Games are a tricky one, it all depends on what you are doing with the game. I develop a middleware server for an RTS and for that it shines but it would not suit the gameplay side of things very well (you can of course still use it for anything!).

Repo for reference: https://github.com/beyond-all-reason/teiserver