That's a good question. A few months ago, I searched / monitored my company, and this is a cruel flaw. Personnaly I would not go for expensive third-party solutions, since they are seriously overestimated by IMHO. Most of them do not provide sufficient interactivity and are full of prosperity, not having the real capabilities that could be expected from a decent 3D surface.
ILNumerics, ( ). Winforms, ASP, .