I`ve tried almost all whois online modules from JED. What I want to say about them? From Joomla 3.4.7 they can`t work properly, because of new Joomla session.php file. Joomla does not write session.browser userstring in mysql _session table anymore. So I decided to write my own module. Maybe it will be usefull for other Joomla users, have a look on how WhoIsWho Online module for Joomla 3 works and which features has.