jystewart

Many people use wordpress to run blogs alongside their Ruby on Rails applications. And many 
Ruby on Rails applications use very similar login systems, derived from the restful_authentication 
or clearance plugins. This plugin provides hooks so that your wordpress blog can read your rails 
app’s database.yml file, connect to that database and authenticate the user against your rails app.
This plugin requires the syck PHP extension for parsing yaml. Instructions for installing syck are available at 
http://trac.symfony-project.org/wiki/InstallingSyck
<h3>To Do</h3>
<ul>
<li>Add automated tests</li>
<li>Solicit user feedback on further options</li>
</ul>

WP Rails Authenticate

Log users in against their accounts in a Ruby on Rails application.

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

WP Rails Authenticate vs WP OpenId Selector