There are quite a lot of C like hardware description languages out there, but none of them really seem to be catching on big. We use one at work, but also bought the source to the compiler so it's not that usable by anyone else. Xilinx's relatively recent purchase of a C like high level synthesis language seems like the most easily accessible of the c like languages, though only being available for one of the major FPGA companies is a drawback. 

While you're patiently waiting for me to get to this, why not read an expert's take when Adam Taylor looks into this in his microZed chronicles