IdentityServer Alternatives

IdentityServer is described as 'An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core' and is an app. There are more than 10 alternatives to IdentityServer for a variety of platforms, including Web-based, SaaS, Self-Hosted, Windows and Linux apps. The best IdentityServer alternative is Keycloak, which is both free and Open Source. Other great apps like IdentityServer are Auth0, Clerk Authentication, AWS Identity and Access Management and Okta.

IdentityServer

Freemium • Open Source

An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core.

More about IdentityServer

IdentityServer alternatives page was last updated Feb 20, 2024

Keycloak
Open Source Identity and Access Management for modern Applications and Services.
80 Keycloak alternatives
License model
- Free • Open Source
Application type
- Identity Management Tool
Platforms
- Linux
- Self-Hosted
+1
Keycloak Features
1. Two-factor Authentication
2. Single Sign-On
3. SAML Single Sign-On
4. Multi-Factor Authentication (MFA)
5. Federated
6. Access Control
Show all NaN Keycloak features ▾
Keycloak VS IdentityServer
Is Keycloak a good alternative to IdentityServer?
- Keycloak is the most popular Linux & Self-Hosted alternative to IdentityServer.
- Keycloak is the most popular Open Source & free alternative to IdentityServer.
- Keycloak is Free and Open SourceIdentityServer is Freemium and Open Source

Auth0
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:
72 Auth0 alternatives
License model
- Freemium • Proprietary
Application type
- Identity Management Tool
Platforms
- Online
Auth0 Features
1. Google Login
2. OAUTH
3. Single Sign-On
4. Facebook Login
5. Multi-Factor Authentication (MFA)
Show all NaN Auth0 features ▾
Auth0 VS IdentityServer
Is Auth0 a good alternative to IdentityServer?
- Auth0 is the most popular Web-based alternative to IdentityServer.
- Auth0 is Freemium and ProprietaryIdentityServer is Freemium and Open Source

Clerk Authentication
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.
58 Clerk Authentication alternatives
License model
- Freemium • Proprietary
Platforms
- Software as a Service (SaaS)
Clerk Authentication Features
React
User Management
React Native
Show all NaN Clerk Authentication features ▾
Clerk Authentication VS IdentityServer
Is Clerk Authentication a good alternative to IdentityServer?
- Clerk Authentication is the most popular SaaS alternative to IdentityServer.
- Clerk Authentication is Freemium and ProprietaryIdentityServer is Freemium and Open Source

AWS Identity and Access Management
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.
61 AWS Identity and Access Management alternatives
License model
- Free • Proprietary
Application type
- Identity Management Tool
Platforms
- Software as a Service (SaaS)
- Amazon Web Services
AWS Identity and Access Management VS IdentityServer
Is this a good alternative to IdentityServer?

Okta
Okta's Workforce and Customer Identity Clouds enable secure access, authentication, and automation—putting identity at the heart of business security and growth.
68 Okta alternatives
License model
- Paid • Proprietary
Application type
- Identity Management Tool
Platforms
- Online
- Software as a Service (SaaS)
Top Okta Features
1. Time-based One-time Password
2. FIDO U2F (2FA) support
3. Biometric Authentication
4. Passkey Support
5. Ad-free
6. LDAP support
7. Passwordless
8. API Management
9. Single Sign-On
10. Workflow Management
11. Multi-Factor Authentication (MFA)
12. OAUTH
Show all NaN Okta features ▾
Okta VS IdentityServer
Is Okta a good alternative to IdentityServer?
- Okta is the most popular commercial alternative to IdentityServer.
- Okta is Paid and ProprietaryIdentityServer is Freemium 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 IdentityServer
Is authentik a good alternative to IdentityServer?

Ory
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.
52 Ory alternatives
License model
- Freemium • Open Source
Application type
- Identity Management Tool
Platforms
- Software as a Service (SaaS)
- Online
- Windows
- Android
- Mac
- Linux
- iPhone
- Self-Hosted
- iPad
Ory Features
1. Access Control
2. OpenID Provider
3. User Management
4. Two-factor Authentication
5. Multi-cloud access control
6. OpenID Connect
7. Biometric Authentication
8. Single Sign-On
Show all NaN Ory features ▾
Ory VS IdentityServer
Is Ory a good alternative to IdentityServer?
- Ory is the most popular Windows, Android, Mac, iPhone & iPad alternative to IdentityServer.
- Ory is Freemium and Open SourceIdentityServer is also Freemium and Open Source

openiddict
OpenIddict aims at providing a versatile solution to implement an OpenID Connect server and token validation in any ASP.NET Core.
2 openiddict alternatives
License model
- Free • Open Source
Platforms
- Self-Hosted
- .NET Framework
openiddict VS IdentityServer
Is openiddict a good alternative to IdentityServer?

Wren:AM
All-in-one access management solution providing strong and adaptive authentication, authorization, single sign-on (SSO), entitlements, federation and web services security.
11 Wren:AM alternatives
License model
- Free • Open Source
Platforms
- Self-Hosted
Wren:AM Features
1. OAUTH
2. Multi-Factor Authentication (MFA)
3. OpenID Provider
4. Access Control
5. SAML Single Sign-On
6. Single Sign-On
7. OpenID Connect
Show all NaN Wren:AM features ▾
Wren:AM VS IdentityServer
Is Wren:AM a good alternative to IdentityServer?

Login-Master
With the extensions of Keycloak+, enterprise requirements are fullfilled like: Delegated Administration, management of permissions in organizational structures, SCIM 2 provisioning, User Life Cycle / Housekeeping, GDPR/data protection/Audit and many more IAM features, for...
50 Login-Master alternatives
License model
- Paid • Proprietary
Application type
- Identity Management Tool
Platforms
- Online
- Software as a Service (SaaS)
Login-Master Features
Two-factor Authentication
Biometric Authentication
Show all NaN Login-Master features ▾
Login-Master VS IdentityServer
Is Login-Master a good alternative to IdentityServer?

TOTPRadius
A simple and cost-effective way to provide secure, policy-compliant and user-friendly on-premises two-factor authentication solution with self-enrollment.
48 TOTPRadius alternatives
License model
- Paid • Proprietary
Platforms
- Windows
- VMware vSphere Hypervisor
TOTPRadius Features
Time-based One-time Password
Show all NaN TOTPRadius features ▾
TOTPRadius VS IdentityServer
Is TOTPRadius a good alternative to IdentityServer?

Hiboo SSO
Single sign-on solution specifically built for modern FOSS hosted services.
55 Hiboo SSO alternatives
License model
- Free • Open Source
Platforms
- Online
Hiboo SSO Features
Single Sign-On
Show all NaN Hiboo SSO features ▾
Hiboo SSO VS IdentityServer
Is Hiboo SSO a good alternative to IdentityServer?