Cilium is described as 'A microservices-based application is split into small independent services that communicate with each other via APIs using lightweight protocols like HTTP, gRPC, Kafka and more. However, existing Linux network security mechanisms (e.g' and is an app in the network & admin category. There are four alternatives to Cilium for a variety of platforms, including Linux, SaaS, Self-Hosted, Amazon Web Services and Mac apps. The best Cilium alternative is Apache APISIX, which is both free and Open Source. Other great apps like Cilium are Kong, Istio and AWS App Mesh.