Originally Posted by handsonhosting

We us phplivesupport. We've used Kayako (and still have an owned license for the suite), but don't use it now as there's no Linux support for the chat. We HAVE to run Windows to use their chat support. Not good enough!

For $100 (one time fee) and then install the software on your own server, and have full access to customize the code, templates and inner workings of the software - the phplivesupport can hardly be beat.