Installing Addons [page]deterministic
Add-ons extend the functionality of Kubernetes.
This page lists some of the available add-ons and links to their respective installation instructions. The list does not try to be exhaustive.
## Networking and Network Policy
* [ACI](https://www.github.com/noironetworks/aci-containers) provides integrated container networking and network security with Cisco ACI. * [Antrea](https://antrea.io/) operates at Layer 3/4 to provide networking and security services for Kubernetes, leveraging Open vSwitch as the networking data plane. Antrea is a [CNCF project at the Sandbox level](https://www.cncf.io/projects/antrea/). * [Calico](https://www.tigera.io/project-calico/) is a networking and network policy provider. Calico supports a flexible set of networking options so you can choose the most efficient option for your situation, including non-overlay and overlay networks, with or without BGP. Calico uses the same engine to enforce network policy for hosts, pods, and (if using Istio & Envoy) applications at the service mesh layer. * [Canal](https://projectcalico.docs.tigera.io/getting-started/kubernetes/flannel/flannel) unites Flannel and Calico, providing networking and network policy. * [Cilium](https://github.com/cilium/cilium) is a networking, observability, and security solution with an eBPF-based data plane. Cilium provides a simple flat Layer 3 network with the ability to span multiple clusters in either a native routing or overlay/encapsulation mode, and can enforce network policies on L3-L7 using an identity-based security model that is decoupled from network addressing. Cilium can act as a replacement for kube-proxy; it also offers additional, opt-in observability and security features. Cilium is a [CNCF project at the Graduated level](https://www.cncf.io/projects/cilium/). * [CNI-Genie](https://github.com/cni-genie/CNI-Genie) enables Kubernetes to seamlessly connect to a choice of CNI plugins, such as Calico, Canal, Flannel, or Weave. CNI-Genie is a [CNCF project at the Sandbox level](https://www.cncf.io/projects/cni-genie/). * [Contiv](https://contivpp.io/) provides configurable networking (native L3 using BGP, overlay using vxlan, classic L2, and Cisco-SDN/ACI) for various use cases and a rich policy framework. Contiv project is fully [open sourced](https://github.com/contiv). The [installer](https://github.com/contiv/install) provides both kubeadm and non-kubeadm based installation options. * [Contrail](https://www.juniper.net/us/en/products-services/sdn/contrail/contrail-networking/), based on [Tungsten Fabric](https://tungsten.io), is an open source, multi-cloud network virtualization and policy management platform. Contrail and Tungsten Fabric are integrated with orchestration systems such as Kubernetes, OpenShift, OpenStack and Mesos, and provide isolation modes for virtual machines, containers/pods and bare metal workloads. * [Flannel](https://github.com/flannel-io/flannel#deploying-flannel-manually) is an overlay network provider that can be used with Kubernetes. * [Gateway API](/docs/concepts/services-networking/gateway/) is an open source project managed by the [SIG Network](https://github.com/kubernetes/community/tree/main/sig-network) community and provides an expressive, extensible, and role-oriented API for modeling service networking. * [Knitter](https://github.com/ZTE/Knitter/) is a plugin to support multiple network interfaces in a Kubernetes pod. * [kube-router](https://github.com/cloudnativelabs/kube-router) is an open source turnkey solution for Kubernetes networking with the aim to provide operational simplicity and high performance. It leverages the Kubernetes API, BGP, and Golang for the control path and Linux networking primitives (IPVS, nftables, etc.) for the data path. It provides a low overhead alternative and is used in both k0s and k3s. * [Multus](https://github.com/k8snetworkplumbingwg/multus-cni) is a Multi plugin fo …(trimmed)