Useful programs

Here’s a short list and a short description of programs that can be used with Xnee:

Swinput
Fakes keyboard/mouse input via the kernel (Linux). Used to verify GNU Xnee.

Xephyr
Xephyr is a kdrive based X Server which targets a window on a host X Server as its framebuffer. Unlike Xnest it supports modern X extensions ( even if host server doesn’t ) such as Composite, Damage, randr etc. It uses SHM Images and shadow framebuffer updates to provide good performance. It also has a visual debugging mode for observing screen updates. Xephyr is part of the Xserver module from freedesktop (GIT) Readme
(…. Xephyr is one of Henrik’s absolute favorite tools)

xvfb
Xvfb is an X server that can run on machines with no display hardware and no physical input devices. It emulates a dumb framebuffer using virtual memory.
Read more at en.wikipedia.org/wiki/Xvfb