Google Cloud Pub/Sub vs NATS
| Google Cloud Pub/Sub | NATS | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | $40/mo | — |
| Open source | No | No |
| Platforms | api, Web | — |
| Free plan | Yes | — |
| Deployment model | cloud | hybrid |
| Delivery guarantees | configurable | configurable |
| Dead-letter queues | Yes | — |
| Maximum message size | 10 MB | — |
| Supported protocols | REST, gRPC | NATS, MQTT, WebSocket |
Both are listed in Best Message Broker Software, Best Message Queue (MQ) Software. On Everything Xiaomi, Google Cloud Pub/Sub scores higher on our published basis.