UltraVNC GbVNCViewer is a software product for Windows developed by UltraVNC
It is reported that the following Windows processes are part of UltraVNC GbVNCViewer:
If you want to remove UltraVNC GbVNCViewer from your computer, just go to Start > Control Panel > Add/Remove programs and select UltraVNC GbVNCViewer from the list of programs.