IndieAuth is described as 'Way to use your own domain name to sign in to websites. It works by linking your website to authentication providers such as Twitter or Google, then entering your domain name in the login form on websites that support IndieAuth' and is a authentication protocol in the security & privacy category. There are more than 10 alternatives to IndieAuth for a variety of platforms, including Self-Hosted, Web-based, iPhone, iPad and Android apps. The best IndieAuth alternative is OpenID, which is both free and Open Source. Other great apps like IndieAuth are OAuth, Portier, humanID and Twitter OAuth.