Hello! We have a small team that is working to integrate different systems. So far we have successfully integrated - Drupal Interspire Shopping Cart Magento WHMCS Wordpress with more coming soon. Working on next: vBulletin The project is located here - kayako-loginshare - Project Hosting on Google Code The license is MIT, so feel free to take what I have done and modify and use for your own needs. I would like to see the community take this project and modify it to include other systems. It would be nice to have a centralized project with multiple people working on the same thing. I am not the worlds best coder (possibly the worst), so you will not hurt my feelings if you tell me it is the worst POS ever written, but it does work. I wrote it to be VERY simple to follow, so anyone should be able to look at it and know what is going on. It is also modular, so it is VERY easy to add other systems. The hard part is understanding how other systems hash out their user passwords. Most are using salt, but all systems can be done. I was working on Joomla, but I was having a hard time understanding their salting hash, but I will get that soon. If you have a specific system that you want more than anything else, let me know and I will start working on what the community thinks it needs next. Download Script Directly If you have any questions, please feel free to ask.