EMQX Enterprise - Self-managed scalable and reliable MQTT messaging platform, an all-in-one distributed MQTT broker with multiple protocol gateways and a powerful built-in SQL-based IoT rule engine.

RabbitMQ - RabbitMQ is an open source message broker software.

EMQX Cloud - A fully managed MQTT service that connects your IoT devices to the cloud with reliable, real-time IoT data transmission, processing, and integration. Accelerate business that matters while avoiding the headaches of infrastructure management.

Apache Kafka - Apache Kafka is an open-source message broker project developed by the Apache Software Foundation written in Scala.

CloudMQTT - CloudMQTT implements MQ Telemetry Transport protocol for carrying out messaging using a publish/subscribe message queueing model.

Resque - Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.