If you don't use Emacs, what do you use? Visual Studio? What if you are on a Mac? Xcode?, what about linux? Code blocks? And then what about email and tasks?

If you don't use Emacs, what do you use? Visual Studio? What if you are on a Mac? Xcode?, what about linux? Code blocks? And then what about email and tasks? Gmail? Outlook? Wunderlist? And notes? Google Keep? Evernote?, wait, no Onenote!, but then they dont have a linux client. What about file management? Total commander on a PC?, Forklift on a mac? and mc on Ubuntu? What about sharing settings and shortcuts between all these across multiple OSs? I use Emacs for all this and it works the same on every OS. It's a portable OS/Lisp Machine.