MicroEmacs

There are actually several ErsatzEmacs editors known under a common name MicroEmacs, or uemacs (for the similarity of u and the greek μ). They originated all from a common ancestor, written somewhen around 1985 by Dave Conroy. George Jones ported the sources to the Amiga and posted them to the USENET group comp.sources.amiga. Steve Wilhite also worked on the code prior to it’s posting. Daniel Lawrence later greatly modified and maintained the source. (See EditorsUsedByOthers and EmacsImplementations.)

It came to a certain fame after Linus Torvalds was known to use a particular version of it around the time it was the only editor he had on Linux.

Daniel Lawrence’s original Microemacs is available as source code and binaries for various systems: Google:uemacs.

It’s available in versions 3.12 and 4.0. I personally never got any of these to work.






Although the source is available, Lawrence’s Microemacs is not free software, because its license prohibits commercial use. He is known to be an radical GPL hater, and refused to make his uemacs free software on several occasions, when he was asked.

FreeBSD users have Microemacs available in ports. /usr/ports/editors/uemacs/ contains Microemacs 4.00, which works just fine. Some standard Emacs keybindings, like ‘C-x C-f’, are present, but many others are not. ‘M-x describe-key’ works, for instance, except you don’t press RET before the key you want described. The help file seems to be missing.


Source:
http://www.emacswiki.org/emacs/MicroEmacs