UltraVNC is a very famous program for controlling remote Microsoft Windows and Linux machines. If you have multiple UltraVNC servers and you want to keep them all in one place, then you should use Vnc Address Book, which is an open source utility that lets you create and manage groups, add your UltraVNC servers under these groups and save their names, IP addresses, ports and passwords. Vnc Address Book allows you to control different session configurations such as color level, encoding, quality, proxy information and much more.
The added servers can be accessed via SSH (Secure Shell) or Telnet through the integrated famous SSH client called "PUTTY". The program has a built-in UltraVNC viewer for controlling the remote servers but requires UltraVNC to be installed. Moreover, the program associates (.VNC) file extension to UltraVNC and launches an editor so they can be edited and saved.
The program can export your UltraVNC server details to a (.VNC) file for future external use and it can import servers' configurations from any already existing (.VNC) files so they appear under your groups. The program has a nice modern yet simple design with an English and a Dutch interface.