OneLogin provides single sign-on for WordPress as well as nearly 600 other web-based apps and almost all our customers have one or more WordPress accounts that they use our solution to log into. You can read more about us at:
We're trying to gauge the interest for an easy-to-use SAML plug-in for WordPress and I'd like to hear from anyone who would be interested in that.
Please respond to thomas (a) onelogin dot com
Thomas