Emacs variants and versions

JOVE (Jonathan’s Own Version of Emacs)

EmACT by Eligis - a tiny, portable editor with Emacs UI

notGNU - tiny freeware (proprietary?) editor with Emacs UI

JED (S-Lang extensible editor) in Emacs emulation mode

Rust Emacs

GNU Zile (ZILE Is Lossy Emacs)

JOE - Joe's Own Editor (jmacs)

QEmacs (Quick Emacs)

MicroEmacs (not to be confused with mg)

Mg, an Ersatz Emacs once known as "MicroGNUEmacs"