UltraVNC

I agree, as the author, you can do whatever you want with the software. However, as I understand it, releasing the UI under the GPL is meaningless.

The GPL forbids redistribution of software that links to any non-system library unless the source code for that library is also released. As the author ...

Further to the FAQ question "How Do I get the source code for Single Click and PcHelpware", specifically the statement:
PcHelpWare is not opensource.
PcHelpWare can not be compiled without spending spending several $100 to purchase the needed third party library files

First of all, I'm not clear ...