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NATS Server vs RabbitMQ
RabbitMQ is an MPL-licensed broker with AMQP 1.0 and MQTT 5.0 support and both queues and streams, with extended support in a paid edition.- NATS Server vs Apache Kafka
Apache Kafka offers durable event streaming with built-in stream processing, but is designed for clustered deployments that take more operational effort. - NATS Server vs Apache ActiveMQ
Apache ActiveMQ is a Java-based broker supporting JMS, AMQP, STOMP and MQTT, which requires a Java runtime and server administration. - NATS Server vs Eclipse Mosquitto
Eclipse Mosquitto is a lightweight MQTT-only broker suited to IoT and single-board computers, narrower in scope than NATS messaging.