Open Source Keycloak AlternativesIdentity Management Tools and other similar apps like Keycloak

The best open source alternative to Keycloak is AuthKit. If that doesn't suit you, our users have ranked more than 50 alternatives to Keycloak and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Keycloak are Hanko, Stack Auth, ZITADEL and Authelia.

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Keycloak alternatives are mainly Identity Management Tools but may also be Reverse Proxy Servers. Other popular filters includes Self-Hosted + Open Source. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Keycloak.

Keycloak

Identity Management Tool
Free • Open Source

Open Source Identity and Access Management for modern Applications and Services.

More about Keycloak

Keycloak alternatives page was last updated Apr 15, 2024

AuthKit
AuthKit is a Radix-powered open source authentication UI built for effortless customizations. User Management is the backend platform handling email verification, account linking, bot blocking, organization modeling, and more.
27 AuthKit alternatives
License model
- Freemium • Open Source
Platforms
- Online
- Self-Hosted
+2
AuthKit Features
1. Biometric Authentication
2. Two-factor Authentication
3. API Integration
4. Login
5. OAUTH
6. Multi-Factor Authentication (MFA)
Show all NaN AuthKit features ▾
AuthKit VS Keycloak
Is AuthKit a good alternative to Keycloak?
- AuthKit is the most popular Web-based & Self-Hosted alternative to Keycloak.
- AuthKit is the most popular Open Source & free alternative to Keycloak.
- AuthKit is Freemium and Open SourceKeycloak is Free and Open Source

Hanko
Hanko is an open source authentication and user management solution that takes you on the journey beyond passwords. For better security, higher conversion rates, and happier users.
25 Hanko alternatives
License model
- Free • Open Source
Application type
- Identity Management Tool
Platforms
- Self-Hosted
- Software as a Service (SaaS)
Hanko Features
1. Biometric Authentication
2. Passkey Support
3. Two-factor Authentication
4. Passwordless
5. Login
6. User Management
Show all NaN Hanko features ▾
Hanko VS Keycloak
Is Hanko a good alternative to Keycloak?
Comments about Hanko as an Alternative to Keycloak

SebL
Open source, simple component-based integrations, and passkeys - what's not to like?
Positive comment •Mar 24, 2023
0
- Hanko is the most popular SaaS alternative to Keycloak.
- Hanko is Free and Open SourceKeycloak is also Free and Open Source

Stack Auth
Stack is an open-source, self-hostable, and highly customizable authentication and user management system.
25 Stack Auth alternatives
License model
- Freemium • Open Source
Application type
- Identity Management Tool
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
Stack Auth Features
1. Privacy focused
2. No Tracking
3. Ad-free
4. Dark Mode
5. OAUTH
6. User Management
7. React
Show all NaN Stack Auth features ▾
Stack Auth VS Keycloak
Is Stack Auth a good alternative to Keycloak?

ZITADEL
Secure authentication management for your application. Customize as you grow, with easy APIs and programmable workflows. Focus on growing, your login is in good hands.
26 ZITADEL alternatives
License model
- Free • Open Source
Application type
- Identity Management Tool
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
Top ZITADEL Features
1. Passwordless
2. Multi-Factor Authentication (MFA)
3. Login
4. SAML Single Sign-On
5. OpenID Provider
6. Passkey Support
7. Two-factor Authentication
8. Biometric Authentication
9. Single Sign-On
10. User Management
11. LDAP support
Show all NaN ZITADEL features ▾
ZITADEL VS Keycloak
Is ZITADEL a good alternative to Keycloak?

Authelia
Protect your applications with Single Sign-On and 2 Factor. Authelia is an open-source full-featured authentication server available on Github.
13 Authelia alternatives
License model
- Free • Open Source
Application type
- Identity Management Tool
Platforms
- Self-Hosted
- Kubernetes
- Docker
Authelia Features
1. Privacy focused
2. Two-factor Authentication
3. Support for Docker
4. LDAP support
5. Single Sign-On
6. Ngnix support
7. HTTP Basic Authentication
8. Golang
9. Kubernetes
Show all NaN Authelia features ▾
Authelia VS Keycloak
Is Authelia a good alternative to Keycloak?

LemonLDAP::NG
LemonlLDAP::NG is a modular Web-SSO based on Apache::Session modules. It simplifies the build of a protected area with a few changes in the application. It manages both authentication and authorization and provides headers for accounting.
17 LemonLDAP::NG alternatives
License model
- Free • Open Source
Application type
- Identity Management Tool
Platforms
- Windows
- Linux
- Self-Hosted
+1
LemonLDAP::NG Features
1. Two-factor Authentication
2. Access Control
3. SAML Single Sign-On
4. Single Sign-On
5. OpenID Connect
6. Support for Docker
7. Dockerized
8. OpenID Provider
Show all NaN LemonLDAP::NG features ▾
LemonLDAP::NG VS Keycloak
Is LemonLDAP::NG a good alternative to Keycloak?
- LemonLDAP::NG is the most popular Windows & Linux alternative to Keycloak.
- LemonLDAP::NG is Free and Open SourceKeycloak is also Free and Open Source

authentik
authentik is an open-source identity provider focused on flexibility and versatility.
39 authentik alternatives
License model
- Free • Open Source
Application type
- Identity Management Tool
Platforms
- Self-Hosted
+1
authentik Features
1. Privacy focused
2. Two-factor Authentication
3. Self-hosted
4. Access Control
5. LDAP support
6. Single Sign-On
Show all NaN authentik features ▾
authentik VS Keycloak
Is authentik a good alternative to Keycloak?

Authorizer (authentication)
Your data, your control. Fully open source, authentication and authorization. No lock-ins. Deployment in Railway.app | Heroku in 120 seconds || Spin a docker image as a micro-service in your infra. Built in login page and Admin panel out of the box.
22 Authorizer (authentication) alternatives
License model
- Free • Open Source
Application type
- Identity Management Tool
Platforms
- Self-Hosted
Authorizer (authentication) Features
1. Two-factor Authentication
2. Support for Docker
3. Golang
4. Membership Management
5. GraphQL
Show all NaN Authorizer (authentication) features ▾
Authorizer (authentication) VS Keycloak
Is this a good alternative to Keycloak?

FreeIPA
FreeIPA is an integrated security information management solution combining Linux (Fedora), 389 Directory Server, MIT Kerberos, NTP, DNS, Dogtag (Certificate System). It consists of a web interface and command-line administration tools.
18 FreeIPA alternatives
License model
- Free • Open Source
Platforms
- Linux
FreeIPA Features
DNS Server
LDAP Services
Kerberos
Web interface
Show all NaN FreeIPA features ▾
FreeIPA VS Keycloak
Is FreeIPA a good alternative to Keycloak?

Pomerium
Pomerium is an identity and context-aware proxy that enables secure access to applications without a client. Pomerium provides a standardized interface to add access control to applications regardless of whether the application itself has authorization or authentication baked-in.
9 Pomerium alternatives
License model
- Free • Open Source
Application types
- Identity Management Tool
- Reverse Proxy Server
Platforms
- Linux
- Self-Hosted
- Kubernetes
- Docker
Pomerium Features
Two-factor Authentication
Single Sign-On
OAUTH
Show all NaN Pomerium features ▾
Pomerium VS Keycloak
Is Pomerium a good alternative to Keycloak?

Gluu Server
The Gluu Server is a container distribution of free open source software (FOSS) for identity and access management (IAM). SaaS, custom, open source and commercial web and mobile applications can leverage a Gluu Server for user authentication, identity information, and policy...
39 Gluu Server alternatives
License model
- Freemium • Open Source
Application type
- Identity Management Tool
Platforms
- Online
- Self-Hosted
Gluu Server Features
Two-factor Authentication
Show all NaN Gluu Server features ▾
Gluu Server VS Keycloak
Is Gluu Server a good alternative to Keycloak?

CAS
Apereo CAS - Enterprise Single Sign On for the Web.
15 CAS alternatives
License model
- Free • Open Source
Platforms
- Mac
- Windows
- Linux
- Online
- Self-Hosted
CAS Features
Single Sign-On
Show all NaN CAS features ▾
CAS VS Keycloak
Is CAS a good alternative to Keycloak?