SocketCluster vs Upstash QStash
| SocketCluster | Upstash QStash | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $1/mo |
| Open source | No | No |
| Platforms | Web, Android, iOS | api, Web |
| Free plan | Yes | Yes |
| Deployment model | self_hosted | cloud |
| Ordering guarantees | per_queue | per_queue |
| Supported protocols | HTTP, WebSocket | HTTP |
| Delivery guarantees | — | at_least_once |
| Dead-letter queues | — | Yes |
| Maximum message size | — | 10 MB |
Both are listed in Best Message Broker Software. On Everything Xiaomi, Upstash QStash scores higher on our published basis.