Google Cloud Pub/Sub vs RabbitMQ
| Google Cloud Pub/Sub | RabbitMQ | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | $40/mo | Free |
| Open source | No | No |
| Platforms | api, Web | api, Linux, macOS, self-hosted, Windows |
| Free plan | Yes | Yes |
| Deployment model | cloud | hybrid |
| Delivery guarantees | configurable | configurable |
| Dead-letter queues | Yes | Yes |
| Maximum message size | 10 MB | 16 MB |
| Supported protocols | REST, gRPC | AMQP 0-9-1, AMQP 1.0, MQTT, STOMP, RabbitMQ Streams, HTTP, WebSocket |
| Ordering guarantees | — | per_queue |
Both are listed in Best Message Broker Software, Best Message Queue (MQ) Software. On Everything Xiaomi, RabbitMQ scores higher on our published basis.