Is that possible to single sign-on with completely different domains? we have multilingual Drupal 7 site. 


  Swedish Domain : www.swedish.com
  
  English Domain : www.english.com


admin/config/regional/language looks like screenshot. 







No Domain access is used. I have tried https://www.drupal.org/project/sso_multi_domain but seems there need sub-domains. 

Please suggest is there way we can make login working with separate domains which are pointing to same site folder, same database etc

Thanks!
Have you tried the Domain module? I've looked into it a bit, and seems to do what you need (though I myself have not set up my site yet with it, so I'm not positive). According to the documentation:


  The module allows you to share users, content, and configurations across a group of sites such as:
  
  
  example.com
  one.example.com
  two.example.com
  my.example.com
  thisexample.com &lt;-- can use any domain string
  example.com:3000 &lt;-- treats non-standard ports as unique
  


https://www.drupal.org/project/domain