Furthermore Python[1], Matlab[2], F#[3]. Furthermore parallel device debuggers (TotalView, Allinea), profilers (NVIDIA). There's a long way for OpenCL to catch up, if ever (because there might be a better standard coming further down the line).

[1] http://www.techpowerup.com/181585/NVIDIA-CUDA-Gets-Python-Su...

[2] http://www.mathworks.com/discovery/matlab-gpu.html

[3] https://www.quantalea.net/media/pdf/2012-11-29_Zurich_FSharp...