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

Auth0 company logo
Auth0
FeaturedFree tierPasswordless

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.

Clerk company logo
Clerk
FeaturedFree tierPasswordless

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 company logo
Microsoft Entra
FeaturedFree tier

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 company logo
Okta
FeaturedEnterprise quote

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 company logo
Ping Identity
FeaturedEnterprise quote

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 company logo
WorkOS
FeaturedFree tier

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 company logo
Descope
Free tierPasswordless

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.

ForgeRock company logo
ForgeRock
Enterprise quoteEnterprise

Enterprise identity platform covering CIAM, workforce access, directory and identity governance, now part of Ping Identity.

Frontegg company logo
Frontegg
Free tier

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 company logo
FusionAuth
Free tierEnterprise quotePasswordless

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.

JumpCloud company logo
JumpCloud
Free tier

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 company logo
Keycloak
Free tier

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 company logo
Stytch
Free tierPasswordless

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.

Zitadel company logo
Zitadel
Open sourceFree tierEnterprise

Open source identity and access platform with built-in multi-tenancy, SSO, MFA and a managed Zitadel Cloud SaaS.

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.

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