NanoMQ
An ultra-lightweight and blazing-fast MQTT broker for IoT edge (~3MB footprint) with full MQTT 5.0 compliance and MQTT over QUIC support.
About
NanoMQ is an ultra-lightweight MQTT 5.0 broker written in C for IoT edge and embedded scenarios. Only ~3MB memory footprint with multi-threaded Actor Model on NNG async I/O.