Alternative to an XY table

On the "gingery_machines" web site, someone posted a link that gave details
on a device that seems to be a good alternative to an XY table. The web link
is

http://freeandeasy.sourceforge.net/

Does anyone have any additional information on this device i.e. pros, cons,
accuracy etc.

Any feedback would be greatly appreciated.

Sincerely,
Ken

P.s. I believe this site only works with IE web browser.