Hi There,

Sorry for the delay in response here. As cristiano says above - we have quite a bit of experience with Moodle + CMS. For the purpose of integration with CMS (Drupal/Wordpress), Moodle and Totara are very similar.

In the solutions that we have been involved in delivering that support OAuth and 3rd party authentication (Google, Facebook, Twitter, Linkedin etc) we have preferred to put Drupal + Moodle in front of SimpleSAMLphp (another open source solution) and this has worked really well. And means that if we wanted to add another application instance (CRM, repo, ERP system) we would be able to do this.

Great example of this it http://www.open2study.com - this is a MOOC platform by Open Universities Australia (we were the core technical partner). The system is free and open, so you can log in and try it out. You can tell by the URL when you are changing between Moodle and Drupal.

My email is andrew.boag@catalsyt-au.net if you would like to talk more.

Cheers