RabbitMQ is written in Erlang which definitely supports threads (called processes) and are actually built into the BEAM. I think it is a strong candidate for wh

RabbitMQ is written in Erlang which definitely supports threads (called processes) and are actually built into the BEAM. I think it is a strong candidate for what Erlang brings to the table and I think while you could do it in a native language for sure, it would take more time and most likely be more error prone (unless there was immutability in the language as well).