Open Source Identity and Access Management for modern Applications and Services.
Cost / License
- Free
- Open Source (Apache-2.0)
Application type
Platforms
- Linux
- Self-Hosted
- Cloudron
United States




Apps similar to IdentityServer include Keycloak, which is free and open source. Other options are authentik, Phase Two, Auth0 and Clerk Authentication. You can choose from more than 10 Identity Management Tools like IdentityServer for the web, self-hosting, Linux, Android and Mac.
Open Source Identity and Access Management for modern Applications and Services.




authentik is an open-source identity provider focused on flexibility and versatility.




Phase Two builds on top of Keycloak, one of the most widely used open source identity and access management systems in the world. Our extensions bring multi-tenancy, audit logging, a self-service admin portal, and more to enhance Keycloak for SaaS and on-premise use cases.


You can connect any application (written in any language or on any stack) to Auth0 and define its Connection, the method used to authenticate the users of that application:



Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.


Okta's Workforce and Customer Identity Clouds enable secure access, authentication, and automation—putting identity at the heart of business security and growth.



With AWS Identity and Access Management (IAM), you can specify who or what can access services and resources in AWS, centrally manage fine-grained permissions, and analyze access to refine permissions across AWS.

Ory builds cloud-native authentication (login), authorization (permission), delegation (OAuth2, OpenID Connect), and user management software. You can deploy what you need yourself or use the Ory Network and get started in minutes.
OpenIddict aims at providing a versatile solution to implement an OpenID Connect server and token validation in any ASP.NET Core.
Self-hosted, open-core Identity & Access Management in Go. OIDC/OAuth 2.0, SAML 2.0, SCIM 2.0, FAPI 2.0 and the EU Digital Identity Wallet stack (eIDAS 2.0). Multi-tenant, runs inside your perimeter.

