What message brokers have you used?

In my practice, I have used several message brokers:

• RabbitMQ — for reliable message queuing with support for acknowledgments and routing.
• Apache Kafka — for processing large data streams with the ability to store and re-read messages.
• NATS — for lightweight and fast messages with low latency.

Each of them is suitable for different tasks: RabbitMQ is good for traditional task queues, Kafka — for event-driven systems and analytics, NATS — for microservice communication with high performance.