Apache Pulsar vs Azure Event Hubs
| Apache Pulsar | Azure Event Hubs | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted, Windows | Web |
| Free plan | Yes | No |
| Deployment model | self-hosted | cloud |
| Stream processing | Yes | No |
| Schema registry | Yes | Yes |
| Delivery guarantee | both | at-least-once |
| Supported client languages | Java, Go, Python, C++, C#/.NET, Node.js, WebSocket | .NET, Java, Python, JavaScript, Go, C |
| Maximum retention | — | 1 days |
Both are listed in Best Event Streaming Platforms. On Everything Xiaomi, Apache Pulsar scores higher on our published basis.