Keycloak vs node-oidc-provider
A side-by-side comparison of two self-hosted identity & sso options — licensing, setup difficulty, resource needs, and what each one replaces.
Keycloak
Open-source identity and access management for modern apps
VS
node-oidc-provider
Certified OpenID Connect and OAuth 2.0 provider for Node.js
| Feature | Keycloak | node-oidc-provider |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 99 · Excellent | 88 · Excellent |
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | MIT |
| Language | Java | JavaScript |
| Setup difficulty | Hard | Hard |
| Min. RAM | 1,024 MB | 256 MB |
| Deployment | docker, kubernetes, bare-metal | source, docker |
| GitHub stars | ★ 36,967 | ★ 3,816 |
| First released | 2014 | 2016 |
| Replaces | Okta, Auth0, Microsoft Entra ID | Auth0, Okta |
What are Keycloak and node-oidc-provider?
Keycloak
Keycloak is an enterprise-grade identity and access management solution backed by Red Hat. It provides single sign-on, identity brokering, social login and fine-grained authorization for applications and services.
- SSO with OpenID Connect and SAML 2.0
- Identity brokering and social login
- User federation with LDAP and Active Directory
- Fine-grained authorization services
node-oidc-provider
node-oidc-provider is an open-source, certified OpenID Connect and OAuth 2.0 provider implementation for Node.js. It can be self-hosted to issue tokens and act as an identity provider for applications.
- Certified OIDC provider
- OAuth 2.0 support
- Embeddable in Node apps
- Standards compliant
Keycloak vs node-oidc-provider: key differences
Keycloak is written in Java, while node-oidc-provider is built with JavaScript. Licensing differs — Apache-2.0 for Keycloak versus MIT for node-oidc-provider. Node-oidc-provider is the lighter option, starting around 256 MB of RAM against 1,024 MB for Keycloak. Keycloak is the more established project (first released 2014), while node-oidc-provider arrived in 2016. Keycloak has the considerably larger community, at 36,967 GitHub stars versus 3,816.
Why pick each one
Choose Keycloak if…
- Mature and battle-tested
- Strong enterprise feature set
Watch out for
- Steep learning curve
- Resource intensive
Choose node-oidc-provider if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Active community (3.8k GitHub stars)
- Written in JavaScript
Frequently asked questions
Is Keycloak or node-oidc-provider better?
Neither is universally better. Keycloak has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Keycloak and node-oidc-provider free and open-source?
Yes. Keycloak is licensed under Apache-2.0 and node-oidc-provider under MIT. Both can be self-hosted at no software cost.
Can I run Keycloak and node-oidc-provider with Docker?
Keycloak: yes. node-oidc-provider: yes.
Which is lighter on resources, Keycloak or node-oidc-provider?
node-oidc-provider has the smaller minimum footprint at 256 MB of RAM, compared to about 1,024 MB for Keycloak. Real-world usage depends on library size, user count, and enabled features.