XtDesk
- An X Window icon manager that runs under Linux and FreeBSD.
- http://garuda.newmail.ru/xtdesk_e.dhtml

xxkb
- A simple GUI for XKB (X KeyBoard extension) and just sends commands to and accepts events from XKB. [Open source, Artistic license]
- http://sourceforge.net/projects/xxkb/

xvkbd
- A virtual (graphical) keboard for X Window system.
- http://homepage3.nifty.com/tsato/xvkbd/

ivtools
- A suite of free X Window drawing editors for PostScript, TeX, and web graphics production, as well as an embeddable and extendable vector graphic shell.
- http://www.ivtools.org/ivtools/index.html

Worker
- A filemanager for X-Window. It should run on all POSIX-conforming systems. [Open source, GPL]
- http://www.boomerangsworld.de/worker/

x2vnc
- An X program that will allow two machines to be controlled from the same keyboard and mouse. One machine must run X Window, the other can run X Window or Microsoft Windows.
- http://www.hubbe.net/~hubbe/x2vnc.html

XWho
- Shows logins in a LAN, extension of utilities for viewing utmp data (who, finger, rwho).
- http://www11.informatik.tu-muenchen.de/chair/computing/software/xwho/

Electric Sheep
- A collaborative X screensaver for users with high bandwidth.
- http://www.electricsheep.org/

XScreenSaver
- A screen saver and locker for the X Window system.
- http://www.jwz.org/xscreensaver/

DDD - Data Display Debugger
- A graphical front-end for command-line debuggers such as GDB, DBX, WDB, Ladebug, JDB, XDB, the Perl debugger, or the Python debugger.
- http://www.gnu.org/software/ddd/

dxpc - the Differential X Protocol Compresser
- dxpc is a compressor designed to speed up X11 applications over low-bandwidth links (like dialup PPP connections)
- http://www.vigor.nu/dxpc/

XFIG Drawing Program for X Window System
- XFIG Drawing program software and related documention, libraries, drawings, and pointers.
- http://www.xfig.org/

GTKeyboard
- Site dedicated to distribution and information about GTKeyboard, an X11 application for disabled users.
- http://opop.nols.com/gtkeyboard.html

Copylefted Software
- Software development page of David Allen, which includes full source code for GTKeyboard, an application written for X using the GTK+ tookit, which allows physically disabled users to easily edit text files.
- http://opop.nols.com/index.shtml

John's World of XV
- Multi-format image viewer with some editing capabilities.
- http://www.trilon.com/xv/

xpdf
- A viewer for Portable Documentat Format (PDF) files.
- http://www.foolabs.com/xpdf/

Knews
- A threaded newsreader with an X Window interface.
- http://www.matematik.su.se/users/kjj/knews.html

XMX Home Page
- An X Protocol Multiplexor
- http://www.cs.brown.edu/software/xmx/

Xmcd - X11/Motif CD Player
- CD audio player software for UNIX.
- http://www.ibiblio.org/tkan/xmcd/

xosview
- Displays dynamically-updated small bar charts representing CPU load, memory usage, swap usage, paging, disk activity and interrupts.
- http://xosview.sourceforge.net/

Comp.windows.x.apps FAQ
-
- http://www.ee.ryerson.ca:8080/~elf/xapps/faq.html

Xmmix - X11/Motif audio mixer
- Premium audio mixer application for Linux (also works on other platforms running the 4Front Open Sound System (OSS) driver.
- http://www.ibiblio.org/tkan/xmmix/