GUI for 'gem' command

I’m searching to see if someone has made a desktop app/GUI for the gem
command and am not coming up with anything. Not sure if I’m not
searching right, or if the community has no interest in this or what.

My wish would be for something that allows you to
manage/install/uninstall and all the other options the gem command
provides except with a GUI.

Does anyone know of anything. Windows preferred, but feel free to
mention whatever.