SE Se is a screen oriented curses version of ed.

NE Mainframe-like editor, descendant of E and Zed. Mirror with newer version

SRE SRE is a source editor designed to emulate the Rand editor of the 1970's.

QE PE2-like editor program for U*nix with command line similar to mainframe editors.

Line editors

ecce ECCE is a LineEditor, written in Edinburgh in the 60's by Hamish Dewar.

Gate A text-gatherer is like a text-editor, but much more lightweight and unobtrusive.

No source

Mainedit

TV-Edit

Illusive text editors:

Yale/Tulane Z

Screed, Vecce, IE, Vide from Edinburgh