What is Project Calico?

Project Calico is an open-source project with an active development and user community. Calico Open Source was born out of this project and has grown to become the most widely adopted solution for container networking and security, powering 8M+ nodes daily across 166 countries.

Supercharge Your Kubernetes Networking with Calico eBPF

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Project Calico Logo

Wall of Fame

Logo IBM

IBM Cloud Kubernetes Services deploys Calico Opensource in all our managed Kubernetes and Openshift clusters for both policy and for pod networking.

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Logo SIGHUP

SIGHUP uses Calico as the default CNI for the open-source Kubernetes Fury Distribution.

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Logo FD.io

FD.io integrates Calico with the FD.io/VPP data plane to provide optimal performance for Containerized Networking Functions.

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Logo VMware

Tanzu Kubernetes Grid supports Calico open-source as a CNI option, where it provides reliable pod network connectivity and security.

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Safespring Logo

We have been using Calico in our Openstack clusters. By peering directly with the network infrastructure using BGP, our customers can benefit from ECMP load balancing, path redundancy, and in the future, advanced features like gslb/ IP anycast.

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T-Systems Logo

We are currently developing our Release-2 roadmap, and are focused on integrating Project Calico into our Managed Elastic Kubernetes Service (mEKS) product.

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Rafay Logo

We recommend Calico as the default networking and security solution for customers using the Rafay Kubernetes Operations Platform. No one should run Kubernetes without Calico networking and security.

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Mulligan Funding Logo

It’s extremely helpful to know what endpoints your services are talking to. We have a much-improved security posture.

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Aldagi Logo

We were able to achieve EU GDPR compliance and securely deploy 20 new cloud-native applications.

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Metallic Logo

We are using Calico as a consumer in our K8s.

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Info Support Logo

We are using Calico for managed AKS clusters.

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Bechtle Logo

We are using Calico for Kubernetes network policies.

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Where does Calico fit?

Cat-themed mind map with diverse icons, highlighting the extensive Calico community and its free training initiatives.

Why use Calico?

Single solution

A single, unified platform for all Kubernetes networking, network security, and observability needs that works on any Kubernetes distribution

Workload Interoperability

Works with container, VM, and bare metal workloads

Data plane choice

Works with eBPF, iptables, nftables, Windows, and VPP data planes with a future-proof pluggable architecture

Optimized performance

Built to go faster with lower CPU consumption, to help you get the best possible performance from your investment in clusters

Network security

Simplify the enforcement of network security with Calico network policies

Observability

Gain deep insights with “Whisker” into workload traffic to quickly identify and troubleshoot issues

Ingress Gateway

Enterprise-grade advanced traffic control based on the Kubernetes Gateway API

Enterprise grade

Enterprise hardened networking and simplified network security for cloud-native applications

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How can I get involved?

Here are some recommendations for getting involved with Project Calico. There are many paths though—the only hard rule on getting involved is that we all aim to be excellent to each other and you need to read and follow our Code of Conduct. You can and should expect to see others following it, too.

Sign up to become a member of our ambassador program, Calico Big Cats, and get a chance to share your experience with other users in the community.

Already have experience contributing to open-source software? Get involved!

Put a date in your calendar

Come along to our next Calico Community Meeting! It’s a great way to get involved and be productive.
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Find a good first issue

We label some GitHub issues as good first issues if you want to get familiar and productive quickly. Why not give one a look?
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Help make Calico better

Is there something that’s always bothered you? Chat with us, raise an issue, and then get your hands dirty.
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Join us in Slack

The Calico Users Slack group is a great place to connect with other contributors and Calico developers.
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Getting into open-source software for the first time?
Get updates and support!

Get updates

We’re in the usual places! Get yourself plugged in and start filling your tanks with knowledge.

Put a date in your calendar

Come along to our next Calico Community Meeting! It’s fine to just listen in.
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Report an issue

If you know of a bug or have an idea, browse the open issues and consider opening a new one. Who knows, you might end up helping to fix it!
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Help contribute to our docs

We’re pretty proud of our docs, but nothing’s perfect. Reporting docs issues is a great way to help and gain understanding.
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Getting started

Calico product editions

Calico Open Source Logo

Calico Open Source

eBPF-based network security

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Calico Cloud Free Tier Logo

Calico Cloud Free Tier

Observability & policy management for a single cluster

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Calico Cloud Logo

Calico Cloud

SaaS platform for Kubernetes networking and security

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Calico Enterprise Logo

Calico Enterprise

Self-managed platform for Kubernetes network security and observability

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