Kuma vs Linkerd
A side-by-side comparison of two self-hosted reverse proxy & gateways options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Kuma | Linkerd |
|---|---|---|
| Deploy effort | Read-the-docs project | Read-the-docs project |
| Health score | 89 · Excellent | 93 · Excellent |
| Category | Reverse Proxy & Gateways | Reverse Proxy & Gateways |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Go |
| Setup difficulty | Hard | Medium |
| Min. RAM | 1,024 MB | 256 MB |
| Deployment | kubernetes, helm, binary | kubernetes, helm |
| GitHub stars | ★ 4,008 | ★ 11,498 |
| First released | 2019 | 2016 |
| Replaces | Istio, Linkerd | Istio, AWS App Mesh |
What are Kuma and Linkerd?
Kuma
Kuma is an open-source, CNCF service mesh built on the Envoy proxy that works across Kubernetes and virtual machines. It provides traffic policies, security, and observability for self-hosted environments.
- Multi-zone mesh
- Kubernetes and VM support
- Built-in Envoy
- mTLS and traffic policies
Linkerd
Linkerd is an open-source service mesh that adds observability, reliability, and mTLS security to Kubernetes services. Its lightweight Rust-based data plane proxy is designed for low latency and minimal resource use.
- Automatic mTLS
- Golden-metrics observability
- Lightweight proxy
- Traffic splitting
Kuma vs Linkerd: key differences
Both projects are written in Go. Linkerd is the lighter option, starting around 256 MB of RAM against 1,024 MB for Kuma. Linkerd is the more established project (first released 2016), while Kuma arrived in 2019. Linkerd has the considerably larger community, at 11,498 GitHub stars versus 4,008.
Why pick each one
Choose Kuma if…
- Released under the Apache-2.0 license
- Kubernetes-ready with Helm charts available
- Active community (4k GitHub stars)
- Written in Go
Choose Linkerd if…
- Very low overhead
- Simple to operate
Watch out for
- Kubernetes only
- Fewer features than Istio
Frequently asked questions
Is Kuma or Linkerd better?
Linkerd is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Kuma if its specific feature set fits your needs better.
Are Kuma and Linkerd free and open-source?
Yes. Kuma is licensed under Apache-2.0 and Linkerd under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Kuma and Linkerd with Docker?
Kuma: check the project docs for container support. Linkerd: check the project docs for container support.
Which is lighter on resources, Kuma or Linkerd?
Linkerd has the smaller minimum footprint at 256 MB of RAM, compared to about 1,024 MB for Kuma. Real-world usage depends on library size, user count, and enabled features.