RabbitMQ is an open-source message broker software that allows applications to communicate with each other by sending and receiving messages. It is based on the Advanced Message Queuing Protocol (AMQP), which is a standard protocol for messaging middleware. RabbitMQ can be used to implement a variety of messaging patterns, such as pub/sub, point-to-point, and request-reply.
RabbitMQ works by accepting messages from producers, which are then routed to consumers based on a set of rules called bindings. Producers and consumers can be located on different machines or even different networks, making RabbitMQ a useful tool for building distributed systems. RabbitMQ also supports features such as message acknowledgments, message persistence, and message routing based on message content.
RabbitMQ has a large community of users and is widely used in both enterprise and open-source software projects. It is written in Erlang and is available on multiple platforms, including Linux, Windows, and macOS.