Message Broker (7)

• RabbitMQ: One broker to queue them all | RabbitMQ (rabbitmq.com) tool
  AMQP 1.0 and MQTT 5.0 broker for queues and streams; MPL-2.0 at no cost, paid Broadcom Tanzu support
  Commercial Support MQTT #
• Documentation Redirect (kafka.apache.org) reference
  Kafka docs tree: key concepts, APIs, configuration, design, operations, security, Connect and Streams
  Event Streaming #
• Apache Pulsar (pulsar.apache.org) tool
  multi-tenant pub-sub plus streaming with geo-replication and tiered storage, top-level ASF project
  Event Streaming #
• NATS.io (NATS.io) tool
  single-binary pub/sub, request-reply and JetStream persistence from cloud to edge, open source
  Event Streaming #
• ZeroMQ (zeromq.org) tool
  brokerless sockets carrying atomic messages over TCP, IPC and multicast; pub-sub, push-pull, LGPL
  Event Streaming #
• Eclipse Mosquitto (Eclipse Mosquitto) tool
  lightweight EPL/EDL MQTT 5.0 broker for IoT, plus C client library and pub/sub CLI clients
  MQTT #
• MQTT - The Standard for IoT Messaging (mqtt.org) reference
  pub/sub IoT messaging protocol: three QoS levels, persistent sessions, small headers, TLS and OAuth auth
  MQTT #