miniorange-windows-single-sign-on

This plugin works well. I installed it for a client. Be sure to check all tabs to see all the options. They'll also provide you with a manual upon request, I think. Under Providers tab there's a test button. Use that and you'll see everything being passed. The full attribute is what you'll need for the attribute mapping. (miniOrange, perhaps you can point this out in the attribute mapping page?) One thing to consider is that their office seems to be around Pune, India. This means they'll probably be able to reply to support messages only once per day if you have paid support.

I am having hundreds of wordpress instances and it was a bit difficult for my users to login to each of the site. After using this plugin, my users have to login to windows server just once and then they go through each of the sites without remembering their credentials. Managing users is now very easy. Plugin works great and the amazing support given by the miniOrange was beyond expactation. kudos guys!!