What other messaging systems besides Kafka are you familiar with?

Apart from Apache Kafka, I am familiar with several other messaging systems:

• RabbitMQ — a popular message broker that supports various protocols, including AMQP. Suitable for tasks requiring guaranteed delivery and complex routing.
• ActiveMQ — an Apache message broker that supports JMS and is used for integrating different applications.
• Amazon SQS — a cloud message queue from AWS that provides scalable and reliable message transfer.
• Google Pub/Sub — a cloud messaging system from Google, focused on scalable distributed systems.
• ZeroMQ — a messaging library with low latency, often used for high-performance systems.

Each of these systems has its own features and is suitable for different scenarios depending on requirements for performance, reliability, and application architecture.