Any way to add something similar to Olark or Zopim Olark and Zopim are live chat services. Is there any module to add this feature to a Drupal site? I took a look to 'chat room' module but it is not what I need.
I don't know of a free Drupal service to do this.
Olark has a Drupal guide to get it working on your site. There is also the Olark Chat module. I know that VPS.NET and Lullabot are both using Olark.