Sabre is an acronym for Simple Anti Bot Registration Engine. It's a set of counter measures against spam registration on your blog.
Make your site private by only allowing access to registered users.
Provides a replacement for login and register and lost password and provides feature for password expiration and optional invitation codes.
This plugin enables your users to sign-in with their Google/Yahoo/Facebook and other social identities. Our key design point is simplicity, you can ge
Use the Bugzilla MySQL database as an external authentication source in WordPress.
Allows administrators to take on the role of another user for development, testing and troubleshooting purposes without knowing the users password.
This plugin allows your WordPress users to authenticate and login to Vanilla forums like Facebook Connect.
A BASIC Authentication setting can be performed from an admin screen.
Changes the cookie default path to / (i.e. the whole domain.com not just domain.com/blog) with an option to go across subdomains
With this plugin, you can ask users to authenticate before they can see your WordPress site.
Allow user login or registration using LiberatID service. Additionally, OpenIDs for authentication of users and comments is also supported.
This plugin adds shieldpass two-factor authentication using access cards for different WordPress admin access users into the WordPress login page.
SiteBrains blocks spam posts using a completely configurable set of rules. Both interactively as the user types and on our servers upon submission.
Safe Your WordPress from SQL Injection Attacks.
Allows WordPress to authenticate, authorize, create and update users through Active Directory
Allows users to authenticate without password via XMPP and for visitors to be filtered by XMPP verification.
Allows users to comment on your blog using the facebook credentials or the default wordpress guest credentials.
Lil'Omi adds cross-site Facebook Connect support to your WordPress or BuddyPress site.
Perfect Paper Passwords for your WordPress blog.
wp-http-digest is a WordPress plugin that enables you to store the WordPress passwords in a format that is compatible with HTTP digest authentication
A plugin for SOAP authentication using an external webservice
This plugin allows users to authenticate using a password in the URL. This is especially useful to allow feed readers to access private feeds.
Allows forcing users to register and login individually on each post or page.
The plugin allows WordPress hosts to enable federated login for their WordPress site using Windows Azure AppFabric Access Control Service (ACS) 2.0.
A plugin to authenticate users migrated from Joomla/Mambo to WordPress.
A plugin for authentication/authorisation using Cloudware City for subscription access to a WordPress installation.
Allows you to setup single sign on capabilities between your site and Zendesk. Create's user accounts on the fly, automatically logs in users.
SimpleModal Janrain Engage adds Janrain Engage (aka rpx) to your SimpleModal Login
Authenticates users through Active Directory.
This plugin protects your WPMU signup process against spambots with a simple math question.