Auth0 is a developer-centric customer identity and access management (CIAM) platform offering authentication, authorization, and user management for web and mobile applications, now operating as Okta Customer Identity Cloud.
SSO
Single sign-on across SaaS and internal applications.
16 vendors ·
Quick answer
What is SSO?
Short answer
SSO platforms centralize authentication into one identity provider so users log in once to access many applications via SAML, OIDC, or proprietary integrations.
- Best for
- Any company with more than a handful of SaaS apps that wants to centralize access and reduce password sprawl.
- When to choose
- Check app catalog depth, SCIM provisioning support, MFA integration, and OIDC vs SAML coverage. Prioritize coverage of your top 20 apps.
- When not to choose
- Skip SSO tooling if a broader IAM platform already covers your needs and you don't have category-specific requirements.
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Top vendors in SSO
Clerk provides drop-in authentication UI components and a complete user management platform for React, Next.js, and modern web applications, including B2B organization management and enterprise SSO.
Microsoft Entra ID is Microsoft's cloud-based identity and access management service, providing SSO, MFA, Conditional Access, and identity governance tightly integrated with Microsoft 365 and Azure.
Okta is a leading cloud-native identity and access management platform offering SSO, MFA, lifecycle management, and identity governance for enterprise workforce and customer-facing applications.
Ping Identity provides enterprise IAM with advanced federation, financial-grade API security, and hybrid cloud/on-premises deployment options, commonly deployed in financial services, healthcare, and government.
WorkOS provides a developer API for adding enterprise identity features — SSO, SCIM directory sync, audit logs, and admin portals — to B2B SaaS applications, enabling faster enterprise sales readiness.
Descope provides a no-code/low-code authentication platform with a visual flow builder, enabling teams to design and deploy authentication journeys (passwordless, MFA, SSO) without writing authentication logic from scratch.
Enterprise identity platform covering CIAM, workforce access, directory and identity governance, now part of Ping Identity.
Frontegg provides a full user management and authentication platform for B2B SaaS companies, including enterprise SSO, multi-tenancy, RBAC, audit logs, and self-service admin portals for end customers.
FusionAuth is a comprehensive authentication and user management platform offering flexible deployment (self-hosted, private cloud, or FusionAuth Cloud), developer-friendly APIs, and broad feature coverage including SSO, MFA, SAML, OIDC, and multi-tenancy.
IBM's identity platform covering workforce SSO, MFA, CIAM and access management, available as SaaS or on-prem.
JumpCloud is a cloud directory platform providing unified identity management, SSO, MFA, and device management (MDM) across Windows, Mac, and Linux environments — popular with SMB and mid-market organizations.
Keycloak is the most widely deployed open source IAM platform, providing enterprise-grade SSO, MFA, SAML, OIDC, LDAP, and Kerberos support in a self-hosted, Apache 2.0 licensed package maintained by Red Hat.
OneLogin is a workforce identity and access management platform providing SSO, MFA, and user provisioning for mid-market organizations, now part of One Identity.
Stytch is an API-first authentication platform offering passwordless authentication (magic links, OTPs, passkeys), session management, and B2B organization management with a clean, headless developer experience.
Open source identity and access platform with built-in multi-tenancy, SSO, MFA and a managed Zitadel Cloud SaaS.
Related categories
Related SSO comparisons
Best Okta alternatives in 2026
The strongest Okta alternatives are Microsoft Entra for Microsoft-centric enterprises, Ping Identity for complex federation, JumpCloud for SMB workforce IAM, WorkOS for B2B SaaS developers, and Keycloak for open source.
Best Auth0 alternatives in 2026
The best Auth0 alternatives are WorkOS for B2B SaaS, Clerk for product-led startups, Stytch for passwordless-first apps, FusionAuth for self-hosted CIAM, and Keycloak for open source.
Best Passwordless Authentication Tools in 2026
Descope and Stytch lead on developer-first passwordless flows (magic links, passkeys, OTP). Clerk packages this for product teams. Okta, Microsoft Entra, Ping, and Auth0 deliver passwordless within broader workforce or CIAM platforms.
Best Developer-First Authentication Tools in 2026
Clerk and Stytch lead for product teams wanting drop-in auth and passkeys. WorkOS is the go-to for adding enterprise SSO/SCIM to B2B SaaS. Auth0 remains the most established. FusionAuth and Keycloak are the strongest self-hostable picks.
Best Single Sign-On (SSO) Tools in 2026
Okta and Microsoft Entra dominate workforce SSO. Ping and OneLogin are strong alternatives in regulated and mid-market segments. JumpCloud appeals to SMB/cloud-native. WorkOS adds SSO/SCIM to B2B SaaS. Keycloak is the leading self-hosted option.
Best Multi-Factor Authentication (MFA) Tools in 2026
Okta, Microsoft Entra, and Ping lead workforce MFA. Auth0, Descope, and Stytch lead customer-facing MFA. 1Password and Keeper extend MFA via authenticator and credential workflows, especially in SMB and developer contexts.
Related buyer resources
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