Google Cloud Pub/Sub vs NSQ
| Google Cloud Pub/Sub | NSQ | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | $40/mo | — |
| Open source | No | No |
| Platforms | api, Web | Web, Windows, macOS, Linux |
| Free plan | Yes | — |
| Deployment model | cloud | self_hosted |
| Delivery guarantees | configurable | at_least_once |
| Dead-letter queues | Yes | — |
| Maximum message size | 10 MB | — |
| Supported protocols | REST, gRPC | TCP, HTTP |
| Ordering guarantees | — | none |
Both are listed in Best Message Broker Software, Best Message Queue (MQ) Software. On Inferse, Google Cloud Pub/Sub scores higher on our published basis.