27.5k
Authelia
Authelia is a Single Sign-On Multi-Factor Authentication portal for web apps, providing secure and streamlined access management.
🔑
Authentication🔒
Security⚙️
DevOps
3 Open Source Alternatives to Keycloak
There are 3 open-source alternatives to Keycloak in this directory. The most popular is Authelia with 27.5k GitHub stars, followed by Zitadel(13.5k stars). All are open source, free to use, and many can be self-hosted.
Quick comparison
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | Authelia Authelia is a Single Sign-On Multi-Factor Authentication portal for web apps, providing secure and streamlined access management. | 27.5k | Go | Apache License 2.0 |
| 2 | Zitadel ZITADEL is a modern identity infrastructure that simplifies authentication and authorization for developers, providing advanced features like multi-factor authentication and single sign-on. | 13.5k | Go | GNU Affero General Public License v3.0 |
| 3 | Authgear-server authgear-server is an open-source authentication server that serves as an alternative to Auth0 and Firebase Auth. It provides secure, flexible, and scalable user authentication and identity management for web and mobile applications. | 1.6k | Go | Apache License 2.0 |
All open-source alternatives to Keycloak
13.5k
Zitadel
ZITADEL is a modern identity infrastructure that simplifies authentication and authorization for developers, providing advanced features like multi-factor authentication and single sign-on.
🔑
Authentication🔒
Security🔁
API🛠️
Tools
1.6k
Authgear-server
authgear-server is an open-source authentication server that serves as an alternative to Auth0 and Firebase Auth. It provides secure, flexible, and scalable user authentication and identity management for web and mobile applications.
🔑
Authentication🔒
Security🔁
API
Frequently asked questions
What are the best open-source alternatives to Keycloak?
The top three are Authelia(27.5k stars), Zitadel(13.5k stars), Authgear-server(1.6k stars). All are open source and free to use.
Are these alternatives to Keycloak free?
Yes. Every tool listed here is open source and free to use in your own projects. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Can I self-host an alternative to Keycloak?
Many of the alternatives listed are self-hostable. Each tool's page lists hosting details, system requirements, and licensing terms.
Stay Updated!
Get notified about new tools and updates to existing ones.