KrakenD API Gateway vs Zuul
| KrakenD API Gateway | Zuul | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Linux, macOS, self-hosted, Windows | Linux, self-hosted |
| Free plan | Yes | — |
| Deployment model | hybrid | self-hosted |
| Supported protocols | REST, HTTP, WebSockets, SOAP, gRPC, GraphQL, AMQP, Kafka, NATS | HTTP, HTTP/2, WebSocket, Server-Sent Events (SSE) |
| Authentication methods | JWT, client credentials, OAuth2, OpenID Connect, API keys, Basic Authentication, mTLS | Filter-based authentication, mutual TLS, custom authentication handlers |
| Rate limiting | Yes | Yes |
| Request transformation | Yes | Yes |
Both are listed in Best API Gateway Software. On Freedom251, KrakenD API Gateway scores higher on our published basis.