RabbitMQ is a complete and highly reliable enterprise messaging system based on the emerging AMQP standard
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux

The best free alternative to nanomsg is RabbitMQ, which is also Open Source. If that doesn't suit you, our users have ranked seven alternatives to nanomsg and six of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to nanomsg are Apache Pulsar, ØMQ, ActiveMQ and NSQ.
RabbitMQ is a complete and highly reliable enterprise messaging system based on the emerging AMQP standard

Apache Pulsar is a distributed, open source pub-sub messaging and streaming platform for real-time workloads, managing hundreds of billions of events per day.
ØMQ is a high-performance asynchronous messaging library aimed at use in scalable distributed or concurrent applications. It provides a message queue, but unlike message-oriented middleware, a ØMQ system can run without a dedicated message broker.
Apache ActiveMQ is the most popular and powerful open source messaging and Integration Patterns provider.
Dedicated platform to send and receive messages within your applications. It has simple REST API and clean web UI. It allows to control access to your queues with managed access tokens.

