Apereo CAS – Enterprise Single Sign On for the Web CAS provides enterprise single sign-on service:An open and well-documented protocolAn open-source Java server componentA library of clients for Java, .Net, PHP, Perl, Apache, uPortal, and othersIntegrates with uPortal, Blackboard, Bannner, PeopleSoft, Drupal, Canvas, Liferay.
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| # | Image | App Name | Features | Platforms | Price | Website Link |
| 2 |  |
OpenAthens | Web | Software as a Service (SaaS) | Commercial | Website |
| 3 |  |
shibboleth | Windows Self-Hosted Linux |
Free | Website | |
| 4 |  |
FreeIPA | Linux | Free | Website | |
| 5 |  |
OpenAM | Windows BSD Linux |
Free | Website | |
| 6 |  |
Connect2id Server | Web | Self-Hosted | Commercial | Website |
| 7 |  |
SimpleSAMLphp | Self-Hosted | Free | Website | |
| 8 |  |
Keycloak | Linux Self-Hosted |
Free | Website | |
| 9 |  |
LemonLDAP::NG | Windows Self-Hosted Linux |
Free | Website |