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XEmacs - Official site. Open source text editor for GUI environments. Includes downloads, documentation, getting involved in development and customization. [Linux, Unix, Windows]
The Emacs Schism - How XEmacs (Lucid Emacs as was) came about, by Jamie Zawinski: '[t]his incident has become famous as one of the most significant "forks" in a free software code base'. Edited Highlights of mail-lists as events unfolded.
XEmacs Editor FAQ - Frequently asked questions covering internationalization, troubleshooting, customization, user guidance and release notes. Help build the largest human-edited directory on the web.