Authentication bridges
Single sign-on for Joomla users with bridged applications
JFusion 
Supercharge your Joomla! site. Integrate almost any software into Joomla! and allow your users single logins. Now get full control over integrating multiple softwares at the same time, with the new master/slave capabilities. JFusion is a free GPL plugi ...
Invision PowerBoard (IPB) Login
Extends Joomla default user authentication to allow login, using Invision PowerBoard credentials or email. Set your IPB database parameters and you're ready to go. As a bonus, you can set connection between IPB and JomSocial fields to automatically fill u ...
JWHMCSLogin
The JWHMCS Login module is an add-on module for the popular J!WHMCS Integrator which integrates the Joomla CMS with WHMCS billing software. This module can be used to replace your standard Joomla mod_login module so your clients can login to both Jooml ...
