Contour vs Istio
A side-by-side comparison of two self-hosted reverse proxy & gateways options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Contour
Kubernetes ingress controller powered by Envoy
VS
Istio
Full-featured service mesh for traffic and security control
| Feature | Contour | Istio |
|---|---|---|
| Category | Reverse Proxy & Gateways | Reverse Proxy & Gateways |
| License | Apache-2.0 | Apache-2.0 |
| Language | HTML | Go |
| Setup difficulty | Medium | Hard |
| Min. RAM | 256 MB | 1,024 MB |
| Deployment | kubernetes, helm | kubernetes, helm |
| GitHub stars | ★ 3,944 | ★ 38,338 |
| First released | 2017 | 2017 |
| Replaces | AWS ALB Ingress | AWS App Mesh |
Why pick each one
Choose Contour if…
- Released under the Apache-2.0 license
- Kubernetes-ready with Helm charts available
- Active community (3.9k GitHub stars)
- Written in HTML
Frequently asked questions
Is Contour or Istio better?
Neither is universally better. Istio has the larger community, while Contour is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Contour and Istio free and open-source?
Yes. Contour is licensed under Apache-2.0 and Istio under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Contour and Istio with Docker?
Contour: check the project docs for container support. Istio: check the project docs for container support.