RISC-V is a open specification (actually a couple of them) backed by a the RISC-V foudnation, which "anyone" can use to implement a design on their own. So the

RISC-V is a open specification (actually a couple of them) backed by a the RISC-V foudnation, which "anyone" can use to implement a design on their own. So they are closer to what ARM is, which licenses IP for others to implement.