These are some of the notable Single Sign-On (SSO) implementations available: Product Name Project/Vendor License Identity management platform Description Accounts & SSO Nokia, Intel,... Free software Client-side implementation with plugins for various services/protocols Active Directory Federation ServicesMicrosoftProprietaryClaims-based system and application federation using SAML 2.0 or WS-Federation |- Bitium Bitium Proprietary Enterprise cloud-based identity and access management solution with single sign-on, active directory integration and 2-factor authentication options CAS / Central Authentication ServiceApereoFree & Open Source (Apache 2.0) Protocol and open-source SSO server/client implementation with support for CAS, SAML1, SAML2, OAuth2, SCIM, OpenID Connect and WS-Fed protocols both as an identity provider and a service provider with other auxiliary functions that deal with user consent, access management, impersonation, terms of use, etc. Licensed under Apache 2.0.CoSign single sign onUniversity of MichiganAcademic SSO for University of MichiganDistributed Access Control System (DACS)Distributed Systems SoftwareFree Software Facebook connectFacebookProprietary Facebook SSO to third parties enabled by FacebookFreeIPARed HatFree SoftwareYesIceWall SSOHewlett-Packard EnterpriseProprietary Web and Federated Single Sign-On SolutionIBM Enterprise Identity MappingIBMFree softwareYesWorks with Kerberos (e.g. Active Directory) and other authentication mechanisms to map different identities and hence allow single signon to all IBM server platforms (Windows, Linux, PowerLinux, IBM i, i5/OS, OS/400, AIX) even when the user name differs.LTPAIBMProprietary Imprivata OneSignImprivataProprietary Janrain Federate SSOJanrainProprietaryYesSocial and conventional user SSOJOSSOJOSSOFree Software Open Source Single Sign-On ServerKeycloak (Red Hat Single Sign-On)Red HatOpen sourceYesFederated SSO (LDAP and Active Directory), standard protocols (OpenID Connect, OAuth 2.0 and SAML 2.0) for Web, clustering and single sign on. Red Hat Single Sign-On is version of Keycloak for which RedHat provides commercial support.Microsoft accountMicrosoftProprietary Microsoft single sign-on web serviceMicrosoft Azure EntraIDMicrosoftProprietaryYesCloud based single sign-on which supports SAML 2.0, WS-Federation, and OpenID Connect myOneLoginVMwareProprietary Cloud single sign-onNetIQ Access ManagerMicrofocusProprietaryYes, used in conjunction with NetIQ Identity ManagerAccess Management, Federation and Risk-Based Access Control platformNumina Application FrameworkNumina SolutionsProprietaryYesSingle sign-on system for Windows (OpenID RP & OP, SAML IdP, and proprietary)OktaOkta, Inc.YesOkta is SaaS based identity management and Single Sign On service provider which supports SAML 2.0, OpenID Connect and other protocolsOneLoginOneLogin Inc.ProprietaryYesCloud-based identity and access management with single sign-on (SSO) and active directory integration OpenAthensJiscProprietaryYesIdentity and access management solutions to IdPs and SPs enabling access management to web-based resources. Fully hosted service with several directory integration options, dedicated support team. Maintains OpenAthens Federation. SAML 1.1, SAML 2.0, SSO, self-reg, compatibility with Shibboleth, API. OpenAMOpen Identity Platform CommunityCDDLYes, used in conjunction with OpenDJ and OpenIDMAccess management, entitlements and federation server platformOracle Identity ManagementOracle CorporationProprietaryYesIdentity and Access Management Suite of products from OracleSecureLoginNetIQProprietary Enterprise Single-Sign-On ShibbolethShibbolethFree & Open Source (Apache 2.0)SAML-based open source access control Ubuntu Single Sign OnCanonical Ltd.ProprietaryOpenID-based SSO for Launchpad and Ubuntu services Univention Corporate ServerUniventionFree & Open SourceEnterprise IAM with single sign-on using SAML WSO2 Identity ServerWSO2Free & Open Source (Apache 2.0)YesSAML 2.0, OpenID, OpenID Connect, OAuth 2.0, SCIM, XACML, Passive Federation ZXIDZXIDFree SoftwareYesReference Implementation of TAS3 security
See also List of OAuth providers Identity management Identity management systems OpenID SAML 2.0 SAML-based products and services