I'm not sure if this is comprehensive, but it lists a good number of companies implementing RISC-V. https://en.wikipedia.org/wiki/RISC-V#Implementations https:

I'm not sure if this is comprehensive, but it lists a good number of companies implementing RISC-V. https://en.wikipedia.org/wiki/RISC-V#Implementations https://en.wikipedia.org/wiki/RISC-V#Implementations