http://www.x.org The X.org Foundation, the hub of X Window System development activity.
http://freedesktop.org The effort to produce minimum standards for free desktop software. Not a formal standards body, but a "collaboration zone" where projects are hosted and KDE and GNOME developers can discuss concerns.
http://www.kde.org The home of the K Desktop Environment. A well-organized site, with links to nearly everything relevant to KDE.
http://dot.kde.org The KDE News site, with links to online articles about KDE and its applications, along with press releases and the like.
http://www.gnome.org The GNOME home.
http://www.gnomedesktop.org "Footnotes," the GNOME News site.
http://www.novell.com/linux/ximian.html The Ximian area of Novell.com. Information about Evolution, Mono, and the Ximian Desktop.
http://konqueror.kde.org/ The Konqueror site, covering both the file-management and web-browsing functions of this versatile tool.
http://krusader.sourceforge.net/ The Krusader dual-pane file manager for KDE.
http://www.gnome.org/projects/nautilus/ Nautilus, the GNOME file manager.
http://xwinman.org An Internet hub for learning about and trying Window Managers for X.
http://www.gnomefiles.org/app.php?soft_id=599 Metacity.
http://sawmill.sourceforge.net Sawfish.
http://www.windowmaker.org WindowMaker.
http://www.icewm.org IceWM.
http://icesoundmanager.sourceforge.net/IcePref2 IceWM configuration tool.
http://www.fvwm.org FVWM.
http://blackboxwm.sourceforge.net BlackBox wiki.
http://icculus.org/openbox/2 OpenBox.
http://enlightenment.org Enlightenment.
http://www.xfce.org Xfce.
