On Wed, May 8, 2013 at 10:14 AM, George Tsirigotakis <tsirigotakis.george(a)gmail.com> wrote: http://www.mediawiki.org/wiki/AuthPlugin is probably the best place to start. If your users are all registering through the social networks, then the auth plugin will just need to test the username and password against the user database there. If you're trying to go the other way around (have your mediawiki users also logged into these social applications), then you would need to use something like the OpenID extension. But it sounds like AuthPlugin is what you're looking for. If you want single sign-on, and both mediawiki and the other applications are on the same domain, you may also try using the UserLoadFromSession hook to read the social networks cookie and derive the correct mediawiki user. But that will depend on how the other application's cookies are stored-- whether you can securely read the username from the session, so that you can start up a mediawiki session too. http://www.mediawiki.org/wiki/Manual:Hooks/UserLoadFromSession