(Also seen as "uemacs", "memacs" and some perverts even call it "µemacs")
An editor, designed to be a lightweight version of Emacs. It was originally written by Danial M. Lawrence, currently maintained by Jon Naughton-Green and Steven Phillips (this is called the JASSPA distribution). Famous for coming with systems like Amiga.
It's very light, compared to "real" Emacsen, though it also sacrifices a lot of features that way (but that was to be expected).
Web sites: http://www.jasspa.com/, http://www.microemacs.de/