The programs I use a lot that have OpenGL are Bryce and Vue. In both FWIW, both of those programs have horrible OpenGL implementations and should not be used as examples of the performance. In fact, it's so terrible they shouldn't even be able to claim they are using OpenGL! LOL I like Bryce and Vue, so please don't think I'm bashing them. To see OpenGL really being used right you need to look at Maya, Lightwave, C4D, and programs like that. Games also use OpenGL and DirectX, but in a somewhat different way. And you don't need a real monster video card to run it, but the more powerful the card the more you will get out of the implementation.