Apache Pulsar vs Google Cloud Pub/Sub
| Apache Pulsar | Google Cloud Pub/Sub | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | Free | $40/mo |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted, Windows | api, Web |
| Free plan | Yes | Yes |
| Max message size | — | 10 MB |
Both are listed in Best Message Queue (MQ) Software, Best Schema Registry Software. On Everything Xiaomi, Apache Pulsar scores higher on our published basis.