title: Single Sign-On on Winforms Web Browser control
body: <p>I have a Winforms app which hosts a web browser control. Within this control you can also navigate to pre-determined external websites.</p>
  
  <p>I need to implement Single Sign-On so that the user doesn't need to authenticate in each of the known external websites. I have already some ideas but it would be nice to hear all your opinions.</p>
  
  <p>What would be the best way to do this?</p>
  
  <p>In fact, is there something already for this? (edit: how do browsers remember logins/passwords)?</p>
  
  <p>Cheers</p>