humanID - humanID is a one-click anonymous SSO that provides users with an anonymous identity layer.
OpenID - OpenID is a safe, faster and easier way to log in to web sites.
OAuth - OAuth is an open standard for authorization. It allows users to share their private resources (e.g.
Proofile - Proofile is a simple and easy way to connect your online identities with each other making it...
Portier - An email-based, passwordless authentication service that you can host yourself.
myOpenID - Janrain Engage (formerly RPX) enables you to quickly register and login users on your site via...