Apache Flink vs Kafka Streams
| Apache Flink | Kafka Streams | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | api, Linux, self-hosted | Linux, macOS, self-hosted, Windows |
| Free plan | Yes | Yes |
| Deployment model | self-hosted | self-hosted |
| SQL processing | Yes | No |
| Stateful processing | Yes | Yes |
| Event-time windows | Yes | Yes |
| Supported languages | Java, Python, Scala | Java, Scala |
| Source connectors | 7 | — |
Both are listed in Best Stream Processing Software. On Samsung Mobile US Press, Kafka Streams scores higher on our published basis.