Intellij - Java and Python and probably others Emacs - everything else Intellij, in my opinion has no peer. I bought a license for it, and am happy to say that

Intellij - Java and Python and probably others Emacs - everything else Intellij, in my opinion has no peer. I bought a license for it, and am happy to say that it has paid for itself many times over now. I am no longer afraid of refactoring stuff, never forget to checkin a file, and it just works Emacs, if not for anything else, should be used to look at how software should be designed(for use). A lot of stuff in emacs is very well put, and it almost holds a huge structure by a wire frame, like a beautiful bridge.