My default multi-tab terminal app on Windows is ConEmu, which I find quite solid, although somewhat quirky. One feature I do make use of is the various tasks that can be configured - such as cmd.exe, git bash, MSYS or MSYS2, or a direct remote ssh session. I don't mind omitting the native windows shells, personally. But I do have some preference for git bash or MSYS2, rather than Cygwin. Looking at main.ts this looks like a matter of adding some alternative enumerants, along with the logic to either auto-detect the various options, or require pull paths as a last resort.

But I do wonder if it's possible to spawn these other shells without inheriting Cygwin environment via extraterm?