myOpenID is described as 'Janrain Engage (formerly RPX) enables you to quickly register and login users on your site via their existing Facebook, Google, Yahoo, Twitter, or OpenID accounts. Import rich user profile data, and publish user activities from your site to multiple social networks' and is an website in the social & communications category. There are five alternatives to myOpenID, not only websites but also apps for a variety of platforms, including Self-Hosted, Zen Cart, Drupal and Joomla apps. The best myOpenID alternative is OpenID, which is both free and Open Source. Other great sites and apps similar to myOpenID are OAuth, LoginRadius, IndieAuth and Identity Cloud.