Token2 Hardware Tokens for your WordPress blog.
A plugin for authentication/authorisation using Cloudware City for subscription access to a WordPress installation.
Enables your users to log in to your site without manually entering the password. Instead, user just taps one button on his phone.
二段階認証プラグイン - Caret Two Stage Authentication
Authenticate users using Sun's Open Single Sign On service.
Allows wordpress users to automatically log into phpMyDirectory. The sessions are shared and accounts are created automatically if they do not exist.
Add TOZNY as an authentication option to your WordPress.
The AndroCaptcha - Android like Captcha for for WordPress plugin is a plugin that includes a captcha like an android lock screen on the admin login pa
ThisData monitors logins to your site and notifies the admin/user if a suspicious login is detected.
The plugin allows WordPress hosts to enable federated login for their WordPress site using Windows Azure AppFabric Access Control Service (ACS) 2.0.
Make your site private by only allowing access to registered users.
UNLOQ provides a free, easy to use and integrate, strong authentication systems that replaces passwords with your phone.
Security against all current password hacking techniques and more....
With this plugin you can manage of WordPress users via Google Apps.
Integrate Central Authentication Service (CAS) with WordPress
Perfect Paper Passwords for your WordPress blog.
Sovay secures your identity and your WordPress site logins. Authenticate once and securely access all your sites — without password hassles.
InWebo strong authentication plugin for WordPress
This plugin let you use the swekey authentication USB dongle to secure your login.
This plugin enables you to use the Laravel Facades inside your WordPress Theme. Especially usefull to check the Laravel authenticated user.
Wp Private Access adds an http authentication dialog using WordPress users database
URQUi is based on ephemeral numbers, that are used as keys to identify individuals.
This plugin allows users to authenticate using a password in the URL. This is especially useful to allow feed readers to access private feeds.
Add SMS support to "Two Factor" feature as a plugin
SuperAuth is the truly passwordless authentication system. No passwords, no usernames, no typing, nothing to forget, and completely secure.
2StepAuth increases security of WordPress blogs by adding 2nd level of Authentication. Keeps your blog secure from hackers.
This plugin adds support for logging into WordPress using TrustAuth.
Security Improvements to standard wordpress installs.
Helper plugin for the InstaLogin app.
Sign into WordPress with AuthAnvil Single Sign On