Hi Matthias.
do you know the people from XpdfViewer / Global Map Systems, Inc in person, or have they just written to you?
I just got approached by email.
The software seems to be proprietary and a volunteer who looked at it is also not yet sure if they violate the terms of the GNU LGPL.
Huh, that is sad :(
-- Jose E. Marchesi jemarch@gnu.org
GNU Project http://www.gnu.org