ApsaraMQ for MQTT vs Upstash QStash
| ApsaraMQ for MQTT | Upstash QStash | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Android, iOS, Web | Web |
| Free plan | No | Yes |
| Deployment model | cloud | cloud |
| Delivery guarantees | configurable | at_least_once |
| Dead-letter queues | Yes | Yes |
| Ordering guarantees | none | per_queue |
| Maximum message size | 0.064 MB | 10 MB |
| Supported protocols | MQTT 3.1.1, MQTT 5.0, WebSocket | HTTP |
Both are listed in Best Message Broker Software. On Samsung Mobile US Press, ApsaraMQ for MQTT scores higher on our published basis.