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.

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

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

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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.