Gluu Flex vs Janssen Project
A side-by-side comparison of two self-hosted identity & sso options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Gluu Flex | Janssen Project |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 69 · Good | 80 · Excellent |
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | Apache-2.0 |
| Language | TypeScript | Java |
| Setup difficulty | Hard | Hard |
| Min. RAM | 4,096 MB | 4,096 MB |
| Deployment | docker, kubernetes, helm | kubernetes, helm |
| GitHub stars | ★ 31 | ★ 649 |
| First released | 2009 | 2020 |
| Replaces | Okta, Ping Identity | Okta, Auth0 |
What are Gluu Flex and Janssen Project?
Gluu Flex
Gluu provides a self-hostable identity platform for single sign-on, multi-factor authentication, and access management built on open standards. It supports OAuth, OIDC, SAML, and FIDO2.
- Single sign-on
- OAuth, OIDC and SAML
- FIDO2 strong authentication
- Kubernetes deployment
Janssen Project
The Janssen Project is a Linux Foundation effort delivering a scalable, cloud-native identity and access management platform. It implements OpenID Connect, OAuth 2.0, and FIDO standards for authentication and authorization.
- OpenID Connect provider
- OAuth 2.0 server
- FIDO2 and passkeys
- Cloud-native deployment
Gluu Flex vs Janssen Project: key differences
Gluu Flex is written in TypeScript, while Janssen Project is built with Java. Gluu Flex is the more established project (first released 2009), while Janssen Project arrived in 2020. Janssen Project has the considerably larger community, at 649 GitHub stars versus 31. Gluu Flex lists first-class Docker deployment; Janssen Project does not.
Why pick each one
Choose Gluu Flex if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Written in TypeScript
Choose Janssen Project if…
- Standards complete
- Built for scale
Watch out for
- Complex to operate
- Heavy resource needs
Frequently asked questions
Is Gluu Flex or Janssen Project better?
Neither is universally better. Janssen Project has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Gluu Flex and Janssen Project free and open-source?
Yes. Gluu Flex is licensed under Apache-2.0 and Janssen Project under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Gluu Flex and Janssen Project with Docker?
Gluu Flex: yes. Janssen Project: check the project docs for container support.