Reference

http://www.x.org/ Curators of the X Window System.

http://www.x.org/Downloads_mirror.html Want to download the source to the latest revision of X? Start at this list of mirror sites.

http://www.xfree86.org/ Home of The XFree86 Project, Inc., which has provided a graphical interface for Linux for nearly 10 years.

http://www.kde.org/ The place to get started when learning about KDE and the latest developments.

http://www.gnome.org/ The launch point for more information about GNOME, links to new clients, and GNOME development projects.

http://people.redhat.com/~hp/metacity/ Havoc Pennington's metacity download page, where you can get the latest full-source version of this window manager.

http://sawmill.sourceforge.net/ The home page for the sawfish window manager (formerly called sawmill).

http://www.windowmaker.org/ The source for the latest version of Window Maker.

http://www.icewm.org/ IceWM's home page.

http://www.lesstif.org/ The home page of the LessTif project, which aims to provide GNU GPL versions of OSF/Motif-compatible software libraries.

http://scwm.sourceforge.net/ The home page of a lightweight, yet virtual desktopenabled, window manager.

http://www.fvwm.org/ The home page for FVWM2, where you can download the latest version.

http://www.novell.com/products/desktop/ The place to get started with Ximian GNOME.