Skip to content

Add ADOPTERS.md listing organisations using Flannel in production #2397

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
Copilot wants to merge 3 commits into
base: master
Choose a base branch
from
Draft

Add ADOPTERS.md listing organisations using Flannel in production #2397

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
13a86b5
Initial plan
Copilot Mar 22, 2026
43c0db1
Add ADOPTERS.md with list of organisations using Flannel in production
Copilot Mar 22, 2026
5cb64fe
Add NVIDIA/openshell as production adopter using Flannel with K3s
pgonin Mar 22, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
72 changes: 72 additions & 0 deletions ADOPTERS.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,72 @@
# Flannel Adopters

This document lists organizations known to use Flannel in production or as part of their infrastructure.

If your organization uses Flannel and is not listed here, please open a pull request to add it. This list helps the maintainers understand the project's reach and prioritize future work.

## Production Adopters

These organizations have strong, verifiable evidence of using Flannel in production: documented integrations, custom backends contributed to the codebase, or active maintainer involvement.

| Organization | Usage | More Information |
|---|---|---|
| SUSE / Rancher | Default CNI for [K3s](https://k3s.io) lightweight Kubernetes distribution | https://k3s.io |
| SUSE / Rancher | Default CNI for [RKE2](https://docs.rke2.io) Kubernetes distribution with Windows support | https://docs.rke2.io |
| Tigera | Networking layer in [Canal](https://projectcalico.docs.tigera.io/getting-started/kubernetes/flannel/flannel) (Flannel + Calico network policy) | https://projectcalico.docs.tigera.io |
| Tencent Cloud | Custom [Tencent VPC backend](pkg/backend/tencentvpc/) for Flannel running on Tencent Cloud infrastructure | https://cloud.tencent.com |
| Microsoft | Flannel support for Windows worker nodes in Kubernetes clusters (contributed Windows networking features) | https://www.microsoft.com |
| LinkedIn | Large-scale Kubernetes cluster networking (engineers contributed production fixes for large clusters) | https://www.linkedin.com |
| NVIDIA | CNI for [nvidia/openshell](https://github.com/nvidia/openshell) using [K3s](https://k3s.io) | https://github.com/nvidia/openshell |

## Organizations that Have Contributed to Flannel

The following organizations have employees who have contributed code, documentation, or other improvements to the Flannel project. They may also be using Flannel in production — please reach out and encourage them to confirm their usage above.

| Organization | Contribution Area |
|---|---|
| Airbnb | Kubernetes networking at scale |
| Alauda | Container platform networking |
| Alibaba Cloud | Cloud Kubernetes networking |
| ByteDance | Large-scale container orchestration networking |
| Caicloud | Container cloud platform |
| Canonical | Ubuntu-based Kubernetes deployments |
| Cerner (Oracle Health) | Healthcare Kubernetes infrastructure |
| Cloudbase Solutions | Windows container and Kubernetes networking |
| Collabora | Open source infrastructure |
| Fujitsu | Enterprise Kubernetes networking |
| Goodrain (Rainbond) | Container PaaS networking |
| Greenhouse.io | SaaS Kubernetes infrastructure |
| Hitachi Data Systems | Enterprise storage and networking |
| Hootsuite | Social media platform infrastructure |
| IBM | Enterprise Kubernetes cluster networking |
| LINE (LY Corporation) | Messaging platform Kubernetes networking |
| LMWN | Digital payment platform infrastructure |
| MicroFocus (OpenText) | Enterprise software Kubernetes |
| Mirakl | Marketplace platform infrastructure |
| NVIDIA | GPU-accelerated Kubernetes cluster networking |
| NTT | Cloud and telecommunications Kubernetes infrastructure |
| Pivotal (VMware) | Cloud-native application platform |
| Pure Software | ARM/embedded Kubernetes |
| Red Hat | Kubernetes networking contributions |
| Sematext | Observability platform Kubernetes |
| SofaScore | Sports data platform infrastructure |
| Spotify | Music streaming Kubernetes infrastructure |
| Stripe | Payment platform Kubernetes infrastructure |
| Transwarp | Big data platform networking |
| Tuenti (Telefónica) | Telecommunications Kubernetes |
| Vainu | Sales intelligence platform |
| VMware (Broadcom) | Kubernetes infrastructure and Tanzu platform networking |
| Zopa | Fintech platform infrastructure |

## How to Add Your Organization

To add your organization to this list:

1. Fork the [flannel repository](https://github.com/flannel-io/flannel)
2. Edit `ADOPTERS.md` to add your organization
3. Open a pull request

Please include:
- Organization name and link
- How you use Flannel (e.g., backend type, scale, cloud provider)
- Any relevant links (blog posts, case studies, etc.)
1 change: 1 addition & 0 deletions README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,7 @@ flannel is also widely used outside of Kubernetes. When deployed outside of Kube
- [Running](Documentation/running.md)
- [Troubleshooting](Documentation/troubleshooting.md)
- [Projects integrating with flannel](Documentation/integrations.md)
- [Organizations using flannel in production](ADOPTERS.md)

## Contact

Expand Down
Loading