cert-manager vs Kong Gateway
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?
cert-manager
Automated TLS certificate management for Kubernetes
VS
Kong Gateway
Cloud-native, fast, scalable API gateway
| Feature | cert-manager | Kong Gateway |
|---|---|---|
| Category | Reverse Proxy & Gateways | Reverse Proxy & Gateways |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Lua |
| Setup difficulty | Medium | Medium |
| Min. RAM | 256 MB | 512 MB |
| Deployment | kubernetes, helm | docker, kubernetes, helm |
| GitHub stars | ★ 14,006 | ★ 43,947 |
| First released | 2017 | 2015 |
| Replaces | Certbot | AWS API Gateway, Apigee |
Why pick each one
Choose cert-manager if…
- Released under the Apache-2.0 license
- Kubernetes-ready with Helm charts available
- Mature project with 14k GitHub stars
- Written in Go
Choose Kong Gateway if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Mature project with 43.9k GitHub stars
Frequently asked questions
Is cert-manager or Kong Gateway better?
Neither is universally better. Kong Gateway has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are cert-manager and Kong Gateway free and open-source?
Yes. cert-manager is licensed under Apache-2.0 and Kong Gateway under Apache-2.0. Both can be self-hosted at no software cost.
Can I run cert-manager and Kong Gateway with Docker?
cert-manager: check the project docs for container support. Kong Gateway: yes.