If you have multiple WordPress installations using the same database, this plugin makes it possible for one 
installation to run off the user table of another installation. Main user table selection is completely configurable 
through the options panel, and permissions of the users can be different from blog to blog.
When you switch the user table from one blog to another, all level 10 users (administrators) of the blog you are 
switching to are also made level 10 users on the blog in which you installed the plugin. Only a level 10 user can 
make the switch.
After you switch, you should visit the Users section of the Admin panel to setup permissions for all other users. 
They will be listed as “No role for this blog” in WordPress 2.3, or with an empty Role column under “All Users” in WordPress 2.5/2.6.
Note that ideally the blog you are switching should not have more than the default admin user. Content created by all other users 
will automatically be assigned to more or less random users from the main blog when you switch (based on <code>user_id</code>). Future versions 
of the plugin may support migrating existing users and content.

Shared Users

Have your blog run off the user table of another blog, in the same database.

Syed Balkhi

Jared Atchison

Slava Abakumov

Chris Kelley

Nathan Singh

LionSher Technologies

Login for Google Apps allows existing WordPress user accounts to log in to your website using Google to securely authenticate their account. This means that if they are already logged into Gmail – they can simply click their way through the WordPress login screen – no username or password is explicitly required!
Login for Google Apps uses secure oAuth2 authentication recommended by Google, including 2-factor authentication (2FA) if enabled for your Google Workspace (formerly known as Google Apps and G Suite) accounts.
This is far simpler to configure than the older SAML protocol.
Login for Google Apps is trusted by thousands of organizations from schools to large public companies. Login for Google Apps for WordPress is the most popular enterprise grade plugin enabling login and user management based on your Google Workspace domain.
Its plugin setup requires you to have admin access to any Google Workspace domain, or a regular Gmail account, to register and obtain two simple codes from Google.
<h4>Support and Premium features</h4>
Full support and premium features are also available for purchase:
Eliminate the need for Google Workspace (previously called “Google Apps and G Suite”) domain admins to separately manage WordPress user accounts, and get peace of mind that only authorized employees have access to your organization’s websites and intranet.
See <a href="https://wp-glogin.com/glogin/?utm_source=Login%20Readme%20Top&utm_medium=freemium&utm_campaign=Freemium" rel="nofollow ugc">our website at wp-glogin.com</a> for more details.
The Premium version allows everyone in your Google Workspace (Google Apps / G Suite) domain to log in to WordPress – an account will be automatically created in WordPress if one doesn’t already exist.
Our Enterprise version goes further, allowing you to specify granular access and role controls based on Google Group or Organizational Unit membership.
You can also see logs of accounts created and roles changed by the plugin.
<h4>Extensible Platform</h4>
Login for Google Apps allows you to centralize your site’s Google functionality and build your own extensions, or use third-party extensions, which require no configuration themselves and share the same user authentication and permissions that users already allowed for Login for Google Apps itself.
Using our platform, your website appears to Google accounts as one unified ‘web application’, making it more secure and easier to manage.
<a href="https://wp-glogin.com/wpgoogledriveembedder" rel="nofollow ugc">Google Drive Embedder</a> is an extension plugin allowing 
users to browse for Google Drive documents to embed directly in their posts or pages.
<a href="https://wp-glogin.com/wpgoogleappsdirectory" rel="nofollow ugc">Google Apps Directory</a> is an extension plugin allowing 
logged-in users to search your Google Apps employee directory from a widget on your intranet or client site.
<a href="https://wp-glogin.com/avatars/?utm_source=Login%20Readme%20Avatars&utm_medium=freemium&utm_campaign=Freemium" rel="nofollow ugc">Google Profile Avatars</a> 
is available on our website. It displays users’ Google profile photos in place of their avatars throughout your site.
Login for Google Apps works on single or multisite WordPress websites or private intranets.
<h4>Requirements</h4>
One-click login will work for the following domains and user accounts:
<ul>
<li>Google Workspace Starter</li>
<li>Google Workspace Business Standard</li>
<li>Google Workspace Business Plus</li>
<li>Google Workspace Enterprise</li>
<li>Google Workspace for Nonprofits</li>
<li>Google Workspace for Government</li>
<li>Google Classroom (Google Workspace for Education)</li>
<li>Personal gmail.com and googlemail.com emails</li>
</ul>
Login for Google Apps uses the latest secure OAuth2 authentication recommended by Google. Other 3rd party authentication plugins may allow you to use your Google username and password to login, but they do not do this securely unless they also use OAuth2. This is discussed further in the <a href="https://wordpress.org/plugins/google-apps-login/#faq" rel="ugc">FAQ</a>.
<h4>Translations</h4>
This plugin currently operates in multiple languages.
We welcome volunteers to translate into their own language. If you would like to contribute a translation, please open the WordPress.org <a href="https://translate.wordpress.org/projects/wp-plugins/google-apps-login/" rel="nofollow ugc">Translation portal</a>.
<h4>Website and Upgrades</h4>
Please see our website <a href="https://wp-glogin.com/?utm_source=Login%20Readme%20Website&utm_medium=freemium&utm_campaign=Freemium" rel="nofollow ugc">https://wp-glogin.com/</a> for more information about this free plugin and extra features available in our Premium and Enterprise upgrades, plus support details, other plugins, and useful guides for admins of WordPress sites and Google Apps.
The <a href="https://wp-glogin.com/glogin/?utm_source=Login%20Readme%20PremEnt&utm_medium=freemium&utm_campaign=Freemium" rel="nofollow ugc">Premium and Enterprise versions</a> eliminate the need to manage user accounts in your WordPress site – everything is synced from Google Apps instead.
If you are building your organization’s intranet on WordPress, try out our <a href="https://wp-glogin.com/intranet/?utm_source=Login%20Readme%20AIOI&utm_medium=freemium&utm_campaign=Freemium" rel="nofollow ugc">All-In-One Intranet plugin</a>.

Login for Google Apps

Simple secure login and user management through your Google Workspace for WordPress (using oAuth2 and MFA if enabled).

Shared Users vs Login for Google Apps