GPGPU, OpenCL, CUDA, ATI Stream

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

I've b开发者_如何学JAVAeen reading articles on various sites from morning and I've become confused.

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

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

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.