FusionAuth is a Customer Identity and Access Management server for authentication, authorization, and user management.
Alternatives to Gluu Flex
Google Cloud Identity centrally manages users and groups as a cloud identity service.
WorkOS provides APIs and hosted tools for SaaS companies adding enterprise capabilities to their applications.
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1Password
1Password is a password manager for Android, iOS, Linux, macOS, Windows, and the web.
AndroidiOSWebAPI7.9From $2.99 a month - 5

Descope
Descope is a customer and agentic identity platform for authentication, user management, authorization, and identity journeys.
Free planAndroidiOSWebAPI7.6$249 usage-based - 6

Okta Customer Identity Cloud
Okta Customer Identity Cloud, also known as Auth0, helps organizations provide secure access to applications for users.
Free planAndroidiOSWebAPI7.6From $35 a month - 7

Supabase
Supabase is a backend platform built around a Postgres database, with services for authentication, file storage, realtime data, and server-side functions.
Free planAndroidiOSWebAPI7.6From $25 a month - 8
Microsoft Defender for Business
AndroidiOSAPImacOS7.5 - 9
Clerk
Clerk provides full-stack authentication and user management for applications, including Organizations and Billing.
Free planAndroidiOSWebAPI7.4Free plan - 10
Logto
Logto provides identity and access management for modern apps and SaaS products, covering authentication and authorization.
Free planAndroidiOSWebAPI7.4From $24 a month - 11

IBM Verify
AndroidiOSWebAPI7.3From $15,899.29 a year - 12

MojoAuth
MojoAuth provides passwordless authentication for consumer apps through one API for customer sign-in across web and mobile.
Free planAndroidiOSWebAPI7.3From $120 a month - 13

authentik
authentik is an open-source, self-hostable identity and access management product for organizations managing workforce and customer access.
Free planWebAPILinuxmacOS7.2From $5 a month - 14

Frontegg
Frontegg provides customer identity and access management for customer-facing applications.
Free planAndroidiOSWebAPI7.0Free plan - 15
Stytch
Stytch is an identity platform for applications used by people and AI agents, bringing authentication, authorization, and security tools together.
Free planAndroidiOSWebAPI7.0Free plan - 16
ZITADEL
ZITADEL provides identity and access management for customers, employees, devices, and services.
Free planWebAPILinuxmacOS7.0From $100 a month - 17

Authsignal
AndroidiOSWebAPI6.9From $499 a month - 18
Entrust Identity App
Entrust Identity App provides one-time passcodes for signing in to websites, VPNs, and other online resources, and can verify transactions by showing…
Free planAndroidiOSmacOSWindows6.9Free plan - 196.9
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Keycloak
Keycloak is open-source identity and access management software that adds authentication to applications and secure services, leaving those systems…
Free planWebAPILinuxSelf-hosted6.5Free plan - 21

Amazon Cognito
Amazon Cognito provides sign-up, sign-in, access control, and brokered AWS service access for web and mobile applications.
AndroidiOSWebAPI6.2 - 22

Authelia
Authelia is an open-source authentication and authorization server and portal that adds multi-factor authentication and single sign-on to applications.
Free planWebAPILinuxSelf-hosted6.2Free plan - 23

SecureAuth Workforce Authority
SecureAuth Workforce Authority is an identity and access product for securing workforce users, devices, and applications across modern and legacy environments.
AndroidiOSWebLinux6.2 - 24
Apereo CAS
Apereo CAS is a free, open-source identity provider and middleware for web authentication and authorization.
Free planWebAPISelf-hosted6.1Free plan - 25
OneLogin Passwordless Authentication
AndroidiOSWebmacOS5.8 - 26
PingOne
PingOne is a web-based identity and access service for workforce and customer applications.
Web5.7From $3 a month - 27
Cisco Duo Passwordless
AndroidiOSWebLinux5.6 - 28
HYPR Identity Assurance Platform
AndroidiOSWebLinux5.4 - 29
Okta Workforce Identity
AndroidiOSWeb5.4 - 30
Ory Kratos
AndroidiOSWeb5.3

