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 Kubernetes networking and security, powering 1.5M+ nodes daily across 166 countries.

Where does Calico fit?

icon-slack
10000 +
Slack channel members
200 +
Contributors
15000000 +
Nodes powered by Calico every day
icon-slack
10000 +
Slack channel members
200 +
Contributors
15000000 +
Nodes powered by Calico every day

Why use Calico?

Data plane choice

eBPF, standard Linux, and Windows data planes

Interoperability

Work with non-Kubernetes workloads

Optimized
 performance

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

Operate at scale

Lock in step scalability with Kubernetes clusters without sacrificing performance

Granular access controls

Rich network and security policy model for secure communication and WireGuard encryption

Full Kubernetes network policy support

Work with the original reference implementation of Kubernetes network policy

Active community

Leverage the innovation provided by 200+ contributors from a broad range of companies

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.

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.

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?

Help make Calico better

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

Join us in Slack

The Calico Users Slack group is a great place to connect with other contributors and Calico developers.

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.

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!

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.

Getting started

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