XEmacs

XEmacs is a text editor derived from GNU Emacs. It capitalises on good GUI support. XEmacs runs on almost any Unix-like operating system (inside X or on a text terminal), as well as on Microsoft Windows. It also runs on Mac OS X with an X server, and a native Carbon version is in alpha test.

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Like GNU Emacs, XEmacs is free software available under the GNU General Public License. When speaking about an unspecified version of GNU Emacs/XEmacs, the generic lowercase term emacs (plural emacsen) is used.

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XEmacs was created in 1991 as Lucid Emacs by Lucid Inc. to support their proprietary Energize environment. Lucid forked the code, developing and maintaining their own version of Emacs, because they were dissatisfied with the maintenance of the original Emacs. Their version of Emacs was very popular, so when Lucid went out of business in 1994, the code was picked up by another development team, and maintained under its current name, "XEmacs".

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GNU Emacs: GNU Emacs is one of the two most popular versions of Emacs (see also XEmacs). The GNU Emacs manual describes it as "the extensible, customizable, self-documenting, real-time display editor."...

GUI: Gui is short for Guilherme or Guilhermo or an iteration of that, in English it translates to Will.GUI is short for Graphical user interface贵, or Gu? is an abbreviation for the Guizhou province of the People's Republic of China.abc...

Unix-like: A "Unix-like" operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification. The term can include open source operating systems inspired by Bell Labs' Unix or designed to emulate its ...