Apache APISIX

NGINX

nginx/nginx

Popular

Ubiquitous high-performance web server, reverse proxy and load balancer.

Kong

Kong/kong

Popular

Widely adopted API gateway on NGINX/OpenResty with a large plugin ecosystem and AI gateway features.

Envoy

envoyproxy/envoy

Popular

CNCF L7 proxy and data plane behind Istio and many gateways, configured dynamically via xDS.

Traefik

traefik/traefik

Cloud-native reverse proxy with automatic service discovery and Let's Encrypt certificates.

Caddy

caddyserver/caddy

Web server and reverse proxy with automatic HTTPS and simple configuration.

Tyk

TykTechnologies/tyk

Open-source API gateway written in Go with REST, GraphQL and gRPC support.

KrakenD

krakend/krakend-ce

Stateless, declarative API gateway focused on aggregation and very high throughput.

Amazon API Gateway

aws.amazon.com

Popular

Managed AWS service for REST, HTTP and WebSocket APIs, commonly fronting Lambda.

HAProxy

haproxy/haproxy

Popular

Battle-tested, extremely fast TCP/HTTP load balancer used by many high-traffic sites.