Comodo EasyVPN is the first completely free for non-commercial use program to enable users to easily create virtual private networks between an unlimited number of PCs. It is a freeware instant messenger client application that's easy-to-use and user friendly.
Here is a screenshot to illustrate the features and user interface of this application:
Net Monitor for Employees Professional
Network LookOut Administrator Pro
Advanced Host Monitor
Connection Keeper
MIB Browser