MicroGnuEmacs is essentially free, it is not associated with
the GNU project, and does not have the GNU copyright
restrictions. It is a small, fast, portable editor for people
who can't run real Emacs thing for one reason or another. It
has few if any of the MicroEmacs features that were
incompatible with GNU Emacs and adds missing features that
seemed essential.
MG version 1a of 1986-11-16 is known to work with
4.2BSDMicroGnuEmacs is derived from, and aims to replace, v30 of
MicroEmacs, the latest version from the original MicroEmacs
author Dave Conroy. The chief contributors were Mike Meyer
(2000-04-03)