Compare the Top Event Brokers as of November 2025

What are Event Brokers?

Event brokers are middleware platforms that manage the flow of events between different systems or applications in an event-driven architecture (EDA). These brokers facilitate the decoupling of event producers and consumers by handling the publishing, routing, and consumption of events in real time. They allow systems to asynchronously process and respond to events such as data changes, user actions, or external triggers without direct interaction between the components. Event brokers are often used in microservices architectures, IoT ecosystems, and real-time data processing systems to enable efficient and scalable communication. Compare and read user reviews of the best Event Brokers currently available using the table below. This list is updated regularly.

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    EMQX

    EMQX

    EMQ Technologies

    EMQX is the world's most scalable and reliable MQTT messaging platform designed by EMQ. It supports 100M concurrent IoT device connections per cluster while maintaining extremely high throughput and sub-millisecond latency. EMQX boasts more than 20,000 global users from over 50 countries, connecting more than 100M IoT devices worldwide, and is trusted by over 300 customers in mission-critical IoT scenarios, including well-known brands like HPE, VMware, Verifone, SAIC Volkswagen, and Ericsson. Our edge-to-cloud IoT connectivity solutions are flexible to meet the demands of various industries towards digital transformation, including connected vehicles, Industrial IoT, oil & gas, carrier, finance, smart energy, and smart cities.
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    Starting Price: $0.18 per hour
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    RTI Connext DDS

    RTI Connext DDS

    Real-Time Innovations

    RTI provides the software connectivity framework designed for smart machines and real-world systems. RTI Connext DDS enables intelligent architecture by sharing information in real time, making large applications work together as one. RTI is the best in the world at connecting intelligent, distributed systems. These systems improve medical care, make our roads safer, improve energy use, and protect our freedom. Based on the Connext DDS Databus, RTI’s software allows applications to exchange data in real time and provides the non-stop availability and security essential for mission-critical systems. The Connext Databus enables applications to work together as one, integrated system, significantly reducing development, integration and maintenance costs. RTI Connext is the first intelligent connectivity framework designed to control, monitor, secure and optimize demanding distributed systems.
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