Hi
I'm an engineering student in Spain looking for tools to load up my Arsenal of software.
I wanted to suggest another way of getting donations apart from the general one. You might be interested in what this author does in order to keep his project sustainable over time. He considers user requests and assign a development budget for each feasible proposal. You can read on about this at

http://www.3drad.com/forum/index.php?topic=2473.0

http://www.3drad.com/forum/index.php?board=6.0


Regards,
Carlos