Dynamic, minimalist window manager for X11

http://wmii.suckless.org/

A dockapp that creates an animated Julia set

http://web.novalis.org/

Print queue monitoring dockapp for Window Maker

http://www.ur.uklinux.net/wmlpq/

An audio mixer for the WindowMaker dock

http://www.geocities.com/SiliconValley/Vista/2471/gcc.html

A front-end for mpg123 in a Window Maker dockapp

http://www.dotfiles.com/software/wmmp3/

One of the most useless dockapps in the world

http://wmpal.sourceforge.net/

Audio mixer for the WindowMaker dock

http://www.dockapps.org/file.php/id/63

WindowMaker Dockapp that shows stock ticker(s)

http://mattfischer.com/wmstock/

Displays current conditions and forecasts with icons and text

http://sourceforge.net/projects/wmweatherplus/

pop3 server for retrieval of remote mail on a UNIX system

http://www.bsdnexus.com/wpop3d/

wxWidgets 2.6.4 HTML documentation

http://www.wxwidgets.org/

X11 server performance test program

VNC server for use with real X displays

https://github.com/LibVNC/x11vnc

Program to link multiple X and VNC servers together

http://fredrik.hubbe.net/x2vnc.html

Program to link multiple X servers together

https://github.com/dottedmag/x2x

Play most popular animation formats and show pictures

http://smurfland.cit.buffalo.edu/xanim/home.html

OpenDarwin XML eXtensible ARchiver

http://mackyle.github.io/xar/

X authority file utility

Program to adjust backlight brightness

Mailbox flag for X

X.Org bitmaps data

Scientific calculator for X

Tool for managing x11 cut-buffers

http://oldhome.schmorp.de/marc/xcb.html

The X protocol C-language Binding (XCB) protocol

https://xcb.freedesktop.org/

Module with libxcb/libX11 extension/replacement libraries

https://xcb.freedesktop.org/

Port of Xlib's XImage and XShmImage functions

http://xcb.freedesktop.org/

Standard X key constants and conversion to/from keycodes

http://xcb.freedesktop.org/

Convenience functions for the Render extension

https://xcb.freedesktop.org/

Framework for window manager implementation

http://xcb.freedesktop.org/

X clipboard client

Analog and digital clock for X

http://www.freedesktop.org/Software/xapps

XCMisc extension headers

http://www.freedesktop.org/wiki/Software/xlibs

Device Color Characterization utility for X

Sample X compositing manager

http://www.freedesktop.org/Software/xapps

Monitor system console messages with X

X.org cursors themes

Create an X cursor file from a collection of PNG images

Demo of DBE creating a double buffered spinning scene

Sets the background of your X desktop under water

http://xdesktopwaves.sourceforge.net/

Tools to allow all applications to integrate with the free desktop

https://www.freedesktop.org/wiki/Software/xdg-utils/

Display ditroff output

X.Org X display manager

Display information utility for X

Query configuration information of DRI drivers

Set the root window to the image of earth

https://xearth.org/

Simple text editor for X

Basic XEmacs elisp packages(xemacs-packages)

Simple X-based text editor

http://sydney.proximity.com.au/~ben/xenon/

Print contents of X events

XExt extension headers

http://www.freedesktop.org/wiki/Software/xlibs