iRemoteWP plugin allows you to easily and remotely manage & backup all your WordPress based sites from one dashboard on iremotewp.com.
A Plugin to lock down the whole site to prevent public access.
Authorizer limits login attempts, restricts access to specified users, and authenticates against external sources (e.g., Google, LDAP, or CAS).
Enables LDAP for user authentication, password management and role management.
Sends an email with useful data to the administrator each time a user successfully logs in or fails to connect.
This Plugin allows developers to integrate Latch on his/her WordPress service.
Plugin to integrate WordPress or WordPressMU with existing CAS architectures. Based largely on Stephen Schwink's CAS Authentication plugin.
Enables to login with WordPress user e-mail address.
This plugin protects your registered user base by preventing registration with a disposable email addresse (like the ones provided by mailinator).
Adds a field to the user's profile for redirection upon login.
The bookmark to login nobody but you. Simple and secure.
With this plugin, you can ask users to authenticate before they can see your WordPress site.
Next Active Directory Integration allows WordPress to authenticate, authorize, create and update users against Microsoft Active Directory.
A feature plugin for core to provide Two-Factor Authentication.
A plugin to authenticate users migrated from Joomla/Mambo to WordPress.
Maven Member™ lets you protect pages, posts and categories using flexible roles that you can define.
Integrate your WordPress site with Gigya
Whitelist User IP addresses. If a user logs in from an unknown IP the plugin sends an email to the user and optionally the admin with a one-time key.
Secure login with captcha, two factor authentication and brute force attack protection. Temporary and permanent blacklists for more login security
Plugin adds extra graphic password for your administrator account and adds a higher level of security to your website.
Authenticates users through LDAP.
Adds AuthPro.com remotely hosted service support to your WordPress website.
Install this plugin on unlimited sites and manage them all from a central dashboard.
Allows you to setup single sign on capabilities between your site and Freshdesk. Create's user accounts on the fly, automatically logs in users.
The plugin is a JASIG CAS Client. It performs CAS authentication and autorization for WordPress.
Hides logo in WordPress login screen to make it clearer.
Mighty-CAPTCHA add an authentication with Google reCAPTCHA technology to login, comment, and register form, with API keys which delivered by Google.
Login with any social provider you can think of with this plugin and the Auth0 dashboard.
Install this plugin on unlimited sites and manage them all from a central dashboard. This plugin communicates with your WPSupervisor Admin Panel.