GPGPU, OpenCL, CUDA, ATI Stream

Question

Please tell me what technologies GPGPU exist already and which hardwares vendor's implement GPGPU?

I've been reading articles on various sites from morning and I've become confused.

Answer 1

AMD-ATI allows you to harness the power of GPU using a language based on Brook+. And nVidia provides CUDA.

Answer 2

Brook and CUDA are proprietary technologies. And OpenCL is industry standard, now supported by ATI and NVIDIA. ATI even provides CPU-based implementation.

Answer 3

I've found that Intel is going to create architecture with name Intel Larrabee and VIA declared about creating VIA Trinity , both of which can be use in future for GPGPU and can be as competitor for nVidia CUDA and ATI Stream.