began work on GNU Emacs, to produce a free software alternative to the proprietary Gosling Emacs. GNU Emacs was initially based on Gosling Emacs, but Stallman's...

variant, GNU Emacs, describes it as "the extensible, customizable, self-documenting, real-time display editor". Development of the first Emacs began in...

Emacs Lisp is a Lisp dialect made for Emacs. It is used for implementing most of the editing functionality built into Emacs, the remainder being written...

new version of GNU Emacs (presumed to be version 19). In the late 1980s, Richard P. Gabriel's Lucid Inc. faced a requirement to ship Emacs to support the...

Gnus (/ɡəˈnuːz, ˈɡnuːz/), or Gnus Network User Services, is a message reader which is part of GNU Emacs. It supports reading and composing both e-mail...

Gosling Emacs (often shortened to "Gosmacs" or "gmacs") is a discontinued Emacs implementation written in 1981 by James Gosling in C. Gosling initially...

launched the GNU Project, founded the Free Software Foundation (FSF) in October 1985, developed the GNU Compiler Collection and GNU Emacs, and wrote all...

Wayback Machine. GNU Emacs 27.1 includes built-in support for tab bar (per-frame) and tab-line (per-window). Earlier versions of GNU Emacs can use a tabbed...

of the GNU project. It was based on a unification of similar licenses used for early versions of GNU Emacs (1985), the GNU Debugger, and the GNU C Compiler...

Stallman in 1986 as part of his GNU system, after his GNU Emacs was "reasonably stable". GDB is free software released under the GNU General Public License (GPL)...