In a way, P4 is still in very early stage. As others pointed out, Barefoot Networks is proposing their Tofino chip. To get a taste of what is P4 like, you can

In a way, P4 is still in very early stage. As others pointed out, Barefoot Networks is proposing their Tofino chip. To get a taste of what is P4 like, you can get started with the Behavioural Model [1], which you can imagine as some sort of emulator over x86. My understanding is that it is also being reworked in C++ [2]. Finally, there's a module coming up for OpenVSwitch. [1] https://github.com/p4lang/p4factory https://github.com/p4lang/p4factory [2] https://github.com/p4lang/behavioral-model https://github.com/p4lang/behavioral-model