Google Cloud Pub/Sub is described as 'Pub/Sub works as a messaging middleware for traditional service integration or a simple communication medium for modern microservices' and is an website. There are six alternatives to Google Cloud Pub/Sub, not only websites but also apps for a variety of platforms, including Windows, Linux, Self-Hosted, Mac and Snapcraft apps. The best Google Cloud Pub/Sub alternative is RabbitMQ, which is both free and Open Source. Other great sites and apps similar to Google Cloud Pub/Sub are Apache Pulsar, Amazon Simple Queue Service, Eclipse Mosquitto and ActiveMQ.
RabbitMQ is a complete and highly reliable enterprise messaging system based on the emerging AMQP standard
RabbitMQ is the most popular Windows, Mac & Linux alternative to Google Cloud Pub/Sub.
RabbitMQ is the most popular Open Source & free alternative to Google Cloud Pub/Sub.
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.
Apache Pulsar is the most popular Self-Hosted alternative to Google Cloud Pub/Sub.
Amazon Simple Queue Service (SQS) is a fast, reliable, scalable & affordable message queuing service. Use SQS to transmit data without losing messages.
Amazon Simple Queue Service is the most popular SaaS alternative to Google Cloud Pub/Sub.
Eclipse Mosquitto is an open source (EPL/EDL licensed) message broker that implements the MQTT protocol versions 5.0, 3.1.1 and 3.1. Mosquitto is lightweight and is suitable for use on all devices from low power single board computers to full servers.
Apache ActiveMQ is the most popular and powerful open source messaging and Integration Patterns provider.
goqite (pronounced Go-queue-ite) is a persistent message queue Go library built on SQLite and inspired by AWS SQS (but much simpler).
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