Cisco Packet Tracer

Cisco Packet Tracer screenshots

Packet Tracer is a networking simulation software made by Cisco
Device View
Cisco Packet Tracer 5.1 : Device View

Alternative downloads

Bonjour Print Services for Windows
2.0.2
FREE
Bonjour Printer Wizard lets you configure printers from your computer.
Colasoft Packet Player
2.3
Open captured packet trace files and play them back in the network.
The Tracer beta 1 - build 1-30
0.2
FREE
The Tracer shows information about single hops and geographical locations.