Single Sign-On software

Single Sign-On vendors to know

Established leaders, challengers, newer entrants and the tools practitioners recommend to each other. Being listed is not a ranking or an endorsement, and no vendor paid to appear.

• Okta Single Sign-On

  Established leader

  Market-leading SSO product supporting SAML, OAuth and SCIM; made Agent SSO generally available on August 24, 2026 to extend SSO to AI agents at no extra cost.

  Official site

• Microsoft Entra ID

  Established leader

  Bundled SSO and conditional access for Microsoft 365 tenants; ranked highest on ability to execute among Gartner Access Management Leaders.

  Official site

• PingOne SSO

  Ping Identity

  Established leader

  Gartner Access Management Leader; launched Enterprise Personal Agent Access on September 1, 2026 to govern SSO and runtime access for personal AI agents.

  Official site

• Auth0

  Auth0 (Okta)

  Established leader

  Developer-focused CIAM platform owned by Okta, commonly shortlisted for adding SSO to customer-facing applications via SDKs.

  Read our review →Official site

• OneLogin

  One Identity

  Challenger

  Named an Overall, Product and Market Leader in the KuppingerCole 2025 Access Management Leadership Compass; frequently listed among top SSO providers.

  Official site

• Cisco Duo Single Sign-On

  Challenger

  SSO bundled with Duo's widely deployed MFA, positioned as a straightforward add-on for organizations already using Duo for authentication.

  Official site

• JumpCloud

  Community favourite

  Cloud directory and SSO platform rated the best overall Microsoft Entra ID alternative on G2, popular with MSPs for combining SSO with device management.

  Official site

• WorkOS

  Emerging

  SSO-as-a-service API that lets SaaS companies add enterprise SAML/OIDC SSO and SCIM directory sync without building it in-house.

  Official site

• Keycloak

  Keycloak (Red Hat / CNCF)

  Community favourite

  Free open-source SSO server supporting OIDC, SAML and LDAP; described as the default starting point for self-hosted single sign-on.

  Official site

• Authelia

  Authelia (open source)

  Emerging

  Open-source authentication and SSO server providing 2FA in front of reverse proxies such as NGINX and Traefik, popular in self-hosted and homelab setups.

  Official site