On: Acme: A User Interface for Programmers

This is the default plan9 editor. It's interesting but I hated the massive reliance on the mouse to do everything. The article even calls emacs "keyboard-intensive" like that's a bad thing

Same here. I'm too much of a keyboard guy (and Dvorak, at that), so I've just been admiring it from a distance, but it has some great ideas.

Sam (http://en.wikipedia.org/wiki/Sam_%28text_editor%29) is also interesting, the vi to Acme's emacs, so to speak. Same with the various window managers styled after rio & 8 1/2, the filesystem, etc.