projectcalico/calico

Cloud native networking and network security

7,352

stars

25,571

commits

Go

primary language

Sep 11, 2026

updated

docs.tigera.io/calico/latest/about/
cats
cni
cni-plugin
ebpf
host-protection
identity-aware-policy
k8s
kubernetes
kubernetes-networking
kubernetes-windows
networking
network-policy
observability
openstack
security
windows
xdp
Browse cluster: Kubernetes Networking & CNI Plugins

README

Go Report Card ArtifactHub License GoPkg CII Best Practices

🐾 Welcome to Project Calico!

Project Calico, created and maintained by Tigera, is an open-source project with an active development and user community. Calico Open Source has grown to be the most widely adopted solution for container networking and security, powering 8M+ nodes daily across 166 countries.

🌟 Why use Calico?

  • Data Plane Choice: eBPF, standard Linux, Windows, and VPP — versatility in network solutions.
  • Interoperability: Works across multiple distros, multiple clouds, bare metal, and VMs.
  • Optimized Performance: Engineered for high speed and low CPU usage, maximizing your cluster investments.
  • Scalable Architecture: Grows seamlessly with your Kubernetes clusters without sacrificing performance.
  • Advanced Security: Get granular access controls and WireGuard encryption.
  • Kubernetes Networking Policy Support: Continually defining excellence in Kubernetes network policy standards and support.
  • Vibrant Contributor Community: Over 200 contributors from a wide array of global companies.
  • Flexible networking: An array of networking tools at your disposal, including BGP, VXLAN, service advertisement, and more.

🤝 Join the Calico Community

💡 Contributing to Project Calico

🛠️ Projects We Maintain

📢 Stay Connected

Contributors

(top 30 of 285)

caseydavenport

4,736 commits

fasaxc

3,929 commits

marvin-tigera

2,105 commits

tomastigera

1,777 commits

projectcalico/calico

Cloud native networking and network security

7,352

stars

25,571

commits

Go

primary language

Sep 11, 2026

updated

docs.tigera.io/calico/latest/about/
cats
cni
cni-plugin
ebpf
host-protection
identity-aware-policy
k8s
kubernetes
kubernetes-networking
kubernetes-windows
networking
network-policy
observability
openstack
security
windows
xdp
Browse cluster: Kubernetes Networking & CNI Plugins

README

Go Report Card ArtifactHub License GoPkg CII Best Practices

🐾 Welcome to Project Calico!

Project Calico, created and maintained by Tigera, is an open-source project with an active development and user community. Calico Open Source has grown to be the most widely adopted solution for container networking and security, powering 8M+ nodes daily across 166 countries.

🌟 Why use Calico?

  • Data Plane Choice: eBPF, standard Linux, Windows, and VPP — versatility in network solutions.
  • Interoperability: Works across multiple distros, multiple clouds, bare metal, and VMs.
  • Optimized Performance: Engineered for high speed and low CPU usage, maximizing your cluster investments.
  • Scalable Architecture: Grows seamlessly with your Kubernetes clusters without sacrificing performance.
  • Advanced Security: Get granular access controls and WireGuard encryption.
  • Kubernetes Networking Policy Support: Continually defining excellence in Kubernetes network policy standards and support.
  • Vibrant Contributor Community: Over 200 contributors from a wide array of global companies.
  • Flexible networking: An array of networking tools at your disposal, including BGP, VXLAN, service advertisement, and more.

🤝 Join the Calico Community

💡 Contributing to Project Calico

🛠️ Projects We Maintain

📢 Stay Connected

Contributors

(top 30 of 285)

caseydavenport

4,736 commits

fasaxc

3,929 commits

marvin-tigera

2,105 commits

tomastigera

1,777 commits

Languages

Go

87.1%

Python

4.1%

TypeScript

2.8%

Shell

2.3%

C

1.6%

Makefile

1.3%