Comprehensive comparison of eight Kubernetes ingress controllers and gateways as alternatives to the retiring NGINX Ingress. Evaluates Traefik, HAProxy, Kong, Contour, Pomerium, kgateway, Istio, and Cilium across architecture, configuration, protocol support, traffic management, security, observability, performance, and future-proofing. Includes practical YAML examples, scoring matrix, and guidance on choosing based on use case complexity and team requirements.