I did not find any lang key in my search.

ow_plugins/tinychat/controllers/page.php

This line..

 $this->setPageTitle(OW::getLanguage()->text('tinychat', 'index_title'));

tinychat or index_title keyword does not exist.   

i want to change the title of page tab..  thanks

Thought you might have a new lang zip maybe.. 

but for now i just did it this way.

$this->setPageTitle(OW::getLanguage()->text('TUG vid-chat', ''));