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RPX: User Engagement Made Easy
https://rpxnow.com/, posted 2010 by peter in development free security social webdesign
RPX provides a fully managed sign-in interface that is quick and easy to add to your website. It helps the user choose a sign-in provider, and remembers their decision next time they visit your site, for a one-click login experience. The interface is available either as a javascript popup, or as an IFrame embeded directly into your page.