ARToolKit

[Helge Reikeras]

Hi

I'm considering using ARToolKit for a project I'm working on. See
http://www.hitl.washington.edu/artoolkit/. The disclaimer reads

" IMPORTANT NOTICE REGARDING YOUR RIGHT TO USE ARTOOLKIT:

ARToolKit is made available freely for non-commercial use under the
GNU General Public License. Commercial licenses to a professional
implementation of ARToolKit are available for users for whom the GPL
is not suitable, or who require a higher level of support, or who
require customization or other specialist modifictions. Commercial
licenses are administered by ARToolworks, Inc., Seattle, WA, USA.
Click here for more information on ARToolKit licenses and your usage
options."

I find the wording in the first sentence a bit awkward, especially the
"non-commercial use under the GNU General Public License". I have
always been under the impression the there is no restriction to using
GPL licensed software for commercial usage as long as the terms of the
license is respected.

I am aware of the dual license model, but isn't it inappropriate to
call the GPL a "non-commercial license" and the alternative a
"commercial" license?

I'm 99% sure I can use the GPL version of this software for a
commercial project, but I would like to have it confirmed as I would
need to present this to sponsors.

Best regards,
Helge