...of the vi side of history.
- authors: Peter Deutsch, Butler Lampson, Dana Angluin
- first release: 1965/66
- stands for: quick editor
- developed for the Berkely Timesharing System running on a SDS 940
- sources: https://github.com/arnoldrobbins/qed-archive
- derived from QED
- author: Ken Thompson
- first release: 1971
- stands for: editor
- the original Unix editor
- written in PDP-11/20 assembler
- derived from em
- author: Bill Joy & colleagues
- first release: 1976
- developed as an advanced version of ed
- stands for: extended
- Joy and colleagues got code of em (editor for mortals) from George Coulouris at University College in London
- they improved em -> en
- Joy doesn't know anymore if there was eo or op, but ultimately ex was written
- manpage: http://ex-vi.sourceforge.net/ex.html
- POSIX spec: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ex.html
- derived from ex
- author: Bill Joy
- first release: 1979
- it was an actual command that started ex in visual mode
- stands for: visual (in ex)
- manpage: http://ex-vi.sourceforge.net/vi.html
- POSIX spec: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/vi.html
- derived from vi
- author: Tim Thompson
- first release: 1987
- released on usenet: comp.sys.atari.st
- stands for: ST Editor for VI Enthusiasts
- derived from vi
- author: Steve Kirkendall
- first release: 1990
- released on usenet: comp.editors
- derived from STEVIE
- author: Bram Moolenaar
- created in 1988 (as Vi IMitation 1.0)
- first release: November 2, 1991 (as Vi IMitation 1.14)
- renamed in version 2.0 to Vi IMproved (December 14, 1993)
- derived from the first version of elvis
- author: Keith Bostic
- first release: 1994 (as part of 4.4BSD)
- stands for: new vi
- derived from Vim
- author: Thiago de Arruda
- first release: January 31, 2014
- manpage: https://manpages.debian.org/unstable/nvim
- repository: https://github.com/neovim/neovim
