The Dude

Product: The Dude v3.5
Company: Mikrotik
Website: www.mikrotik.com
Type: Free
Requirements: Windows 2000/XP/Vista/7

The Dude is a unique network monitor that incorporates an interactive map of your network layout, that helps you visualize the structure of your network and provides direct access to network functions specific to each item. It can automatically discover your local network and draw a preliminary layout that can be further customized and saved. You can manually add items, customize the icons and captions used for each device and connect nodes with lines and other drawing tools. The program supports various network monitoring tasks from simple ping checks to port probes and service checks.