Top 12 Open-Source Alternatives to ZITADEL

The top open-source alternatives to ZITADEL are Keycloak, Auth0, and authentik. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Keycloak Landing Page
1

Keycloak

Open Source Identity and Access Management for modern Applications and Services.
Pricing:
- Open Source
#Identity And Access Management #Identity Provider #SSO 4 social mentions
Auth0 Landing Page
2

Auth0

Auth0 is a program for people to get authentication and authorization services for their own business use.
Pricing:
- Open Source
#Identity And Access Management #Identity Provider #SSO 175 social mentions
authentik Landing Page
3

authentik

authentik is an open-source identity provider focused on flexibility and versatility.
Pricing:
- Open Source
#Identity And Access Management #Identity Provider #SSO 41 social mentions
Ory Landing Page
4

Ory

Developer-first Access Management
Pricing:
- Open Source
#Identity And Access Management #Identity Provider #SSO 17 social mentions
SuperTokens Landing Page
5

SuperTokens

Open Source User Authentication - An Alternative to Auth0 / Firebase Auth / AWS Cognito
Pricing:
- Open Source
- Freemium
- Free Trial
#Cyber Security #Identity Verification And Protection #User Management And Authentication 36 social mentions
FusionAuth Landing Page
6

FusionAuth

FusionAuth is a CIAM platform that is 100% free for unlimited users.
Pricing:
- Open Source
- Freemium
- Free Trial
#Authentication #User Management And Authentication #Multi-factor Authentication 29 social mentions
Logto Landing Page
7

Logto

We learnt from our dev community that the identity service has been such a time-consuming and complex task for them in the past, which is why we’ve simplified the experience.
Pricing:
- Open Source
#Password Management #Password Managers #Visitor Management System 18 social mentions
JSON Web Token Landing Page
8

JSON Web Token

JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.
Pricing:
- Open Source
#Identity Provider #Identity And Access Management #SSO 276 social mentions
Permit.io Landing Page
9

Permit.io

Fullstack Authorization as a Service for cloud native applications
Pricing:
- Open Source
#Identity And Access Management #Identity Provider #SSO 2 social mentions
Authelia Landing Page
10

Authelia

Authelia is an open-source authentication server providing SSO and two-factor for your applications running behind NGINX.
Pricing:
- Open Source
#Identity And Access Management #Authentication #SSO
Let's Encrypt Landing Page
11

Let's Encrypt

Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
Pricing:
- Open Source
#Identity And Access Management #Two Factor Authentication #Security & Privacy 311 social mentions
Oso Landing Page
12

Oso

A batteries-included system for authorization.
Pricing:
- Open Source
- Free
- Free Trial
#Developer Tools #Access Control #Open Source 6 social mentions