The Transfer Engine (TE) is a sub-component of CuteFTP Professional. It is COM enabled and provides an interface from which developers can access most of CuteFTP’s file transfer related methods.
If you have created a script or application that calls the TE, you may wish to distribute your script or application to a group of end-users. In order for the TE to work properly on the end users' machines, you must license, install and register the TE on each machine.
Subsequently you must configure the TE so that it can run properly without the CuteFTP GUI (interface) installed, especially if you plan to run automated or scheduled tasks while not logged in, or if you plan to connect to SSL enabled FTP servers.