I understand that Linux uses OpenGL as their (graphics framework?). What does Mac use as theirs?
Linux -> OpenGL | Mac -> ?
Archived thread 284107 from Mac OSX. Markdown source: Mac_OSX/thread_284107_Linux_->_OpenGL__Mac_->.md
Linux uses a variety of things. OpenGL is just one method. In this case OpenGL is used for rendering 3D graphics. In Mac OS X, I think there is OpenGL, but they also have Quartz 3D and Extreme.
OSX also uses OpenGL for 3D rendering.