Libedit homepage: http://sourceforge.net/projects/libedit/
Readline homepage: http://cnswww.cns.cwru.edu/~chet/readline/rltop.html
PHP manual readline entry: http://www.php.net/manual/en/ref.readline.php
PHP-GTK homepage: http://gtk.php.net/
PHP-GTK manual: http://gtk.php.net/docs.php
PHP-GTK mailing list: php-gtk-general-subscribe@lists.php.net
GTK manual: http://developer.gnome.org/doc/API/gtk/
Glade homepage: http://glade.gnome.org/