The default install comes with a built in "Developer License Key'.  This key restricts the application use to the "localhost" server name.  This key is designed to allow software engineers to install and create custom plugins for the "Files Together" application from their desktop machine.  It can also be used for simple evaluations.

Free License Key

You can obtain a free license key from the website www.anywheretogether.com.  There is no time restriction on this license. Licenses are based on the servername.  This license comes with two free user licenses.

You can purchase additional licenses by logging on to your account at http://www.anywheretogether.com.

NB. Installing an invalid license key will stop your system from working.

EULA available here