Apache Qpid Broker-J vs Google Cloud Pub/Sub
| Apache Qpid Broker-J | Google Cloud Pub/Sub | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | Yes |
| Paid from | — | $40/mo |
| Open source | No | No |
| Platforms | Windows, macOS, Linux | api, Web |
| Deployment model | self_hosted | cloud |
| Dead-letter queues | Yes | Yes |
| Ordering guarantees | per_queue | — |
| Supported protocols | AMQP 0-8, AMQP 0-9, AMQP 0-9-1, AMQP 0-10, AMQP 1.0 | REST, gRPC |
| Free plan | — | Yes |
| Delivery guarantees | — | configurable |
| Maximum message size | — | 10 MB |
Both are listed in Best Message Broker Software, Best Message Queue (MQ) Software. On Specifiction, Google Cloud Pub/Sub scores higher on our published basis.