Authress

This plugin upgrades the standard WordPress login forms with one powered by <a href="https://authress.io" rel="nofollow ugc">Authress</a> that enables:
<ul>
<li>Universal authentication
<ul>
<li>Over 40 social login providers</li>
<li>Enterprise connections (SAML, Office 365, Google Apps, and more)</li>
<li>Customer configurable SSO connections</li>
</ul>
</li>
<li>Ultra secure
<ul>
<li>User identity</li>
<li>Security access policies</li>
<li>Mitigate brute force attacks</li>
</ul>
</li>
</ul>
Which includes: 
– Azure AD and B2C 
– Office 365 
– WSO2 
– Ping Identity 
– Okta 
– Auth0 
– Keyclock 
– LinkedIn 
– Salesforce 
– Twitter 
– Google Workspace 
– Yahoo 
– Salesforce 
– Hubspot 
– Steam 
– Slack 
– And any custom OAuth2.1, OpenID, or SAML provider
With SSO Login, you can automatically support business and enterprise customers that have important security requirements for their users to use your site and platform.
<h3>Technical Notes</h3>
By using this plugin you are delegating the site authentication and profile handling to Authress. That means that you won’t need to use the WordPress database to authenticate users and the default WordPress login forms will be upgraded to support the new SSO Login flow.
Please see our <a href="https://authress.io/knowledge-base/" rel="nofollow ugc">knowledge base</a> for more information on how Authress authenticates and manages your users.
<h4>Migrating Existing Users</h4>
Authress allows multiple authentication providers. You can have social providers like Facebook, Twitter, Google+, a database of users and passwords (just like WordPress), or you can use an Enterprise directories like, Office365, Google Apps, SAML, OpenID, OAuth2.1. All those authentication providers are supported and more.
<h3>How to customize this plugin</h3>
This plugin provides extension points to make it easier to configure it exactly as you need. Check out the full docs: 
* <a href="https://github.com/Authress/wordpress-sso-login/blob/main/docs/customizations.md" rel="nofollow ugc">SSO Login customizations</a>

SSO Login – Universal (OAuth + SAML)

SSO Login provides user login, business authentication, SSO, Social login, and Single Sign-On for all sites.

logto

Thank you for choosing <a href="https://logto.io/?ref=wpp" rel="nofollow ugc">Logto</a>! By integrating Logto into your WordPress site, you are not only enhancing the security and user experience of your site, but also enabling a unified login experience across all your applications.
<h3>Why Logto?</h3>
Logto is an open-source Auth0 alternative and a modern authentication and authorization solution for all your applications, including your WordPress sites. With Logto, you can:
<ul>
<li>Enable passwordless login, social login, single sign-on (SSO), and multi-factor authentication (MFA) for your WordPress site.</li>
<li>Use role-based access control (RBAC) to manage user permissions.</li>
<li>Support generic OAuth2, OpenID Connect, and SAML protocols.</li>
<li>Customize the login and registration pages to match your brand.</li>
</ul>
In addition, Logto offers dozens of out-of-the-box integrations with popular social login providers, including Google, GitHub, Entra ID (Azure AD), Facebook, and more. Check out the <a href="https://docs.logto.io/integrations" rel="nofollow ugc">full list of built-in integrations and social login providers</a>.
<h3>Get started</h3>
If you are new to Logto, we recommend checking out our <a href="https://docs.logto.io/" rel="nofollow ugc">introduction page</a> to have a quick overview of Logto concepts and features.
If you are looking for a step-by-step guide to set up Logto, please refer to our <a href="https://docs.logto.io/quick-start/wordpress-plugin" rel="nofollow ugc">WordPress plugin quick start guide</a>.
If you have any questions or feedback, please feel free to:
<ul>
<li><a href="https://discord.com/invite/UEPaF3j5e6" rel="nofollow ugc">Join our Discord server</a> to get help from the community.</li>
<li><a href="https://github.com/logto-io/wordpress/issues" rel="nofollow ugc">Open an issue on GitHub</a> to report bugs or request features.</li>
<li><a href="https://logto.io/" rel="nofollow ugc">Subscribe to a paid plan</a> to get access to official support and more features.</li>
</ul>
<h3>From WordPress admin panel</h3>
<ol>
<li>Go to Plugins > Add New.</li>
<li>Search for “Logto”.</li>
<li>Click Install Now.</li>
<li>Click Activate.</li>
<li>Go to Settings > Logto to configure the plugin.</li>
<li>Follow the <a href="https://docs.logto.io/quick-start/wordpress-plugin" rel="nofollow ugc">quick start guide</a> to set up Logto.</li>
</ol>
<h3>From WordPress.org</h3>
<ol>
<li>Search for “Logto” in the <a href="https://wordpress.org/plugins/" rel="ugc">WordPress.org plugin directory</a>.</li>
<li>Download the plugin ZIP file.</li>
<li>Go to Plugins > Add New in your WordPress admin panel.</li>
<li>Click Upload Plugin.</li>
<li>Select the downloaded ZIP file and click Install Now.</li>
<li>Click Activate.</li>
<li>Go to Settings > Logto to configure the plugin.</li>
<li>Follow the <a href="https://docs.logto.io/quick-start/wordpress-plugin" rel="nofollow ugc">quick start guide</a> to set up Logto.</li>
</ol>

Logto – User Authentication and Authorization

Enable beautiful and secure user authentication, including passwordless, social login, single sign-on, multi-factor authentication (MFA), and more.

SSO Login – Universal (OAuth + SAML) vs Logto – User Authentication and Authorization