Thanks for the comment. Well these frameworks you mentioned don`t really do what we wanted, especially in regard to our platform Grid Ops which we will be posting in future posts. Grid Ops is not just about delivering a message from A to B. It is more about creating a coherent eco system upon which developers can implement many kinds of distributed systems, including RPC, P2P, DHT, file exchange, and much more. Kafka and ZeroMQ are not really designed with these purposes in mind.