ADC online accounts are free. The source for their latest gcc can be found here. You don't have to have an account to download it. For some other things on their open source page, you have to login, though. Assuming you were actually interested in developing for OS X, I'd advise you to use clang instead; gcc sucks bigtime in comparison, and will not be seriously updated by Apple anymore.

With all due respect, that's bullshit. VLC decodes Youtube's streams (saved to disk) at 13% CPU. Flash takes 90%. I don't have a graphics chip that could decode H264 in hardware (apart from being programmable thru OpenCL, to which Adobe has all access in the world). Apple not exposing any APIs (to what?) is a red herring. To me this looks like slowness in the Flash interpreter, a shoddy video codec they implemented, and pure lazyness.

mismoderated you. posting to reverse.