st2i

WP OpenID Selector is the adaptation of openid-selector (http://code.google.com/p/openid-selector/) to wordpress.
Openid plugin (https://wordpress.org/extend/plugins/openid/) is needed to use wp-openid-selector.
Users who want’s to authenticate (register) on a wordpress blog with openid system, only need to click on the their logo’s provider, instead of writing it’s url, to be automaticaly redirected to their openid server and proceed to the authentication.
You can see the plugin in use on our web site (http://www.st2i.com) or on the stackoverflow web site.

WP OpenId Selector

Adaptation of OpenId Selector for wordpress

smartfin

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 get your 
site up in literally under 60 seconds, and there is no 3rd party sites to 
visit or configure.
Our service is completely free for low traffic sites. If your site grows in 
the future, we also offer advanced features for a moderate price, 
such as the following:
<ul>
<li>Extended profile attribute capturing</li>
<li>Pre-built integration, with email marketing, and content management systems</li>
<li>Programmable integration, with various language support</li>
<li>Full identity management suite, with user, role, and permissions management</li>
</ul>
We believe our implementation, focusing on simplicity, is superior to others 
in the same space. But we are still new and would appreciate your 
feedback. Please feel free to comment/rate us here on WordPress, or 
write us for whatever issues you encounter at help@sumilux.com

Social Sign-In

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 …

WP OpenId Selector vs Social Sign-In