# List of single sign-on implementations

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 Services | Microsoft | Proprietary | | Claims-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 Service | Apereo | Free & 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 on | University of Michigan | Academic | | SSO for University of Michigan |
| Distributed Access Control System (DACS) | Distributed Systems Software | Free Software | | |
| Facebook connect | Facebook | Proprietary | | Facebook SSO to third parties enabled by Facebook |
| FreeIPA | Red Hat | Free Software | Yes | |
| IceWall SSO | Hewlett-Packard Enterprise | Proprietary | | Web and Federated Single Sign-On Solution |
| IBM Enterprise Identity Mapping | IBM | Free software | Yes | Works 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. |
| LTPA | IBM | Proprietary | | |
| Imprivata OneSign | Imprivata | Proprietary | | |
| Janrain Federate SSO | Janrain | Proprietary | Yes | Social and conventional user SSO |
| JOSSO | JOSSO | Free Software | | Open Source Single Sign-On Server |
| Keycloak (Red Hat Single Sign-On) | Red Hat | Open source | Yes | Federated 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 account | Microsoft | Proprietary | | Microsoft single sign-on web service |
| Microsoft Azure EntraID | Microsoft | Proprietary | Yes | Cloud based single sign-on which supports SAML 2.0, WS-Federation, and OpenID Connect |
| myOneLogin | VMware | Proprietary | | Cloud single sign-on |
| NetIQ Access Manager | Microfocus | Proprietary | Yes, used in conjunction with NetIQ Identity Manager | Access Management, Federation and Risk-Based Access Control platform |
| Numina Application Framework | Numina Solutions | Proprietary | Yes | Single sign-on system for Windows (OpenID RP & OP, SAML IdP, and proprietary) |
| Okta | Okta, Inc. | | Yes | Okta is SaaS based identity management and Single Sign On service provider which supports SAML 2.0, OpenID Connect and other protocols |
| OneLogin | OneLogin Inc. | Proprietary | Yes | Cloud-based identity and access management with single sign-on (SSO) and active directory integration |
| OpenAthens | Jisc | Proprietary | Yes | Identity 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. |
| OpenAM | Open Identity Platform Community | CDDL | Yes, used in conjunction with OpenDJ and OpenIDM | Access management, entitlements and federation server platform |
| Oracle Identity Management | Oracle Corporation | Proprietary | Yes | Identity and Access Management Suite of products from Oracle |
| SecureLogin | NetIQ | Proprietary | | Enterprise Single-Sign-On |
| Shibboleth | Shibboleth | Free & Open Source (Apache 2.0) | | SAML-based open source access control |
| Ubuntu Single Sign On | Canonical Ltd. | Proprietary | | OpenID-based SSO for Launchpad and Ubuntu services |
| Univention Corporate Server | Univention | Free & Open Source | | Enterprise IAM with single sign-on using SAML |
| WSO2 Identity Server | WSO2 | Free & Open Source (Apache 2.0) | Yes | SAML 2.0, OpenID, OpenID Connect, OAuth 2.0, SCIM, XACML, Passive Federation |
| ZXID | ZXID | Free Software | Yes | Reference Implementation of TAS3 security |