A couple of the Go authors did a lot of the initial coding and continue to code in Acme (rsc, r). The broader Go team use a wider variety: Vim, Emacs, Goland, a

A couple of the Go authors did a lot of the initial coding and continue to code in Acme (rsc, r). The broader Go team use a wider variety: Vim, Emacs, Goland, and VSCode are the most popular from what I've seen.