| AccessMatrix USO | i-Sprint Innovations | Commercial | | |
| AssureBridge SAMLConnect | AssureBridge | Commercial | | Cloud-based SSO, IDP, SP, SAML, OpenID, OAuth, WS-Fed |
| OpenOTP & TiQR Server | RCDevs | Commercial and Free | Yes | OpenID and SAML with OTP (OATH Tokens, Yubikey, SMS, Email) and QRCode Login |
| Active Directory Federation Services | Microsoft | Commercial | | Claims-based system and application federation |
| adAS SSO | PRiSE.es | Free Software | | Advanced Authentication Server (SSO) |
| Athens access and identity management | Eduserv UK | Commercial | Yes | |
| Barebones SSO | CubicleSoft | Free Software | Yes | Protocol and SSO server/client implementation in PHP |
| CA SiteMinder | CA Technologies | Commercial | | |
| CAS / Central Authentication Service | Jasig | Open source | | Protocol and SSO server/client implementation |
| Centrify DirectControl | Centrify | Commercial | | SSO across cloud, mobile and operating systems leveraging protocols such as SAML, OpenID, OAUTH, Pluggable Authentication Module, Kerberos, etc. |
| Clavid | Clavid AG | Free (OpenID) and Commercial | Yes | OpenID, OAUTH and SAML with strong authentication methods such as Certificates, TIQR QR-Code, Swisscom Mobile ID, OTP (OATH Tokens, SMS, MobileOTP), Syferlock, YubiKey, Fingerprint Reader |
| ComponentSpace SAML | ComponentSpace | Commercial | | SAML SSO for ASP.NET |
| CoSign single sign on | University of Michigan | Academic | | SSO for Michigan University |
| Crowd | Atlassian | Commercial | Yes | |
| Distributed Access Control System (DACS) | Distributed Systems Software | Free Software | | |
| Enterprise Sign On Engine | Queensland University of Technology | Free Software | | |
| EmpowerID Federation Services | The Dot Net Factory | Commercial | Yes | Identity management cloud and corporate single sign-on |
| Evidian Enterprise SSO | Evidian | Commercial | Yes | Enterprise single sign-on and authentication |
| Evidian Web Access Manager | Evidian | Commercial | Yes | Seamless internet-to-intranet SSO access (SAML support) |
| Facebook connect | Facebook | Facebook specific SSO | | Facebook SSO to third parties enabled by Facebook |
| Forefront Identity Manager | Microsoft | Commercial | Yes | State-based identity life-cycle management |
| FreeIPA | Red Hat | Free Software | | |
| Geneous SSO-Module | Proatria | Commercial | | Geneous software SSO-Module |
| Gigya SSO | Gigya | Commercial | Yes | Social IdM SSO |
| Hitachi ID Systems | Hitachi | Commercial | Yes | |
| HP IceWall SSO | Hewlett-Packard Development Company, L.P. | Commercial | | Web and Federated Single Sign-On Solution |
| ILANTUS Federation Express | ILANTUS Technologies | Commercial | Yes | Web and Federated Single Sign-On Solution with identity management |
| Imprivata OneSign | Imprivata | Commercial | | Enterprise single sign-on and authentication |
| Janrain Federate SSO | Janrain | Commercial | Yes | Social and conventional user SSO |
| JBoss SSO | Red Hat | Free Software | | Federated Single Sign-on |
| JOSSO | JOSSO | Free Software | | Open Source Single Sign-On Server |
| OX | Gluu | Free Software | | Open Source Single Sign-On + Trust Management |
| Gluu | Gluu | On Demand Software | | Single Sign-On + Trust Management |
| JsonSSO | NimbusDS | Commercial | | Sign-On for Ajax and cross-domain applications |
| Kerberos | M.I.T. | Protocol | | Computer network authentication protocol |
| LTPA | IBM | Commercial | | |
| LemonLDAP::NG | OW2 Consortium | Free Software | Yes | |
| Microsoft account | Microsoft | Free and Commercial (Microsoft is now attracting new websites to use system) | | Microsoft single sign-on web service |
| myOneLogin | VMware | Commercial | | Cloud single sign-on |
| NI-Guardian | Nakina Systems | Commercial | Yes | Centralized Identity Management and Single Sign On |
| Numina Application Framework | Numina Solutions | Commercial | Yes | Single sign-on system for Windows (OpenID RP & OP, SAML IdP, and proprietary) |
| NetIQ Access Manager | NetIQ | Commercial | Yes | Web single sign-on + federation |
| NetIQ SecureLogin | NetIQ | Commercial | Yes | Enterprise single sign-on for Windows |
| OneLogin | OneLogin Inc. | Commercial and Free | Yes | Single sign-on with SAML and Active Directory integration |
| Okta | Okta,Inc. | Commercial | | On-demand identity and access management service in the cloud |
| OpenAM | ForgeRock | Free Software | | Access management, entitlements and federation server platform |
| OpenASelect | Alfa Ariss | Commercial and Free | | |
| Oracle Access Manager | Oracle | Commercial | Yes | |
| Oracle ESSO (formally Passlogix v-GO) | Oracle | Commercial | Yes | |
| Persona | Mozilla | Free Software | | |
| PasswordBank IDaaS | PasswordBank | Commercial | | SSO, Federation, API security, Social ID integration. SAML, OpenID, OAuth, WS-Fed, WS-Trust. SSO to Web and Windows Applications. |
| PingFederate | Ping Identity | Commercial | | SSO, Federation, mobile ID security, API security, Social ID integration. SAML, OpenID, OAuth, WS-Fed, WS-Trust. |
| PingOne | Ping Identity | Commercial | | Cloud-based Identity as a Service. SAML 2.0, OpenID, SCIM. Multiplexing, 2-factor authentication, mobile SSO |
| PortalGuard | PistolStar Inc. | Commercial | | SAML, OTP, TOTP, IdP, Cloud Single Sign-on, Two Factor |
| PortalProtect | Asseco Denmark | Commercial | | |
| Pubcookie | University of Washington | Protocol | | |
| RealPeepz | ciValidator Corp. | Commercial | Yes | Web/Cloud SSO, Integrated Proxy Detection, GeoIP Detection, Identity Verification, Stacked Two-factor Authentication & Dynamic Knowledge-based Authentication (Out of Wallet), Multiple Identity Detection and Linking, and Social Reputation. Ensures commercial and social website users are REAL people before account origination and at login. |
| SAML | OASIS | Protocol | | XML-based open standard protocol |
| Secure Network Communications | SAP | Commercial | | Authorization layer in SAP software system |
| Shibboleth | Shibboleth | Free Software | | SAML-based open source access control |
| Symplified | Symplified | Commercial | | Cloud based, agentless Web Access Management and deployment solution |
| Tivoli Identity Manager | IBM | Commercial | Yes | Identity life-cycle management product |
| Security Access Manager for Enterprise Single Sign-On | IBM | Commercial | Yes | Enterprise Single Sign-On, Strong Authentication, Password Management product |
| Tools4Ever SSO Manager | Tools4Ever | Commercial | Yes | |
| Ubuntu Single Sign On | Canonical Ltd. | Commercial | | OpenID-based SSO for Launchpad and Ubuntu services |
| ZXID | ZXID | Free Software | Yes | Reference Implementation of TAS3 security |
| SmartSignin | SmartSignin Inc. | Free, Professional, and Enterprise versions | Yes | Web/Cloud SSO, Password Management, Two-factor authentication, & Identity & Access Management application |
| SimpleSamlPhp | UNINETT / Feide RnD | Free Software | | PHP implementation SAML SSO Solution |
