Is any software avail to monitor others in networking computers?

is it possible to watch others (monitoring )

if 20 system, 20 persons working in one area in networking computers in internet

how to possible to watch other works

Is any software avail to monitor others in networking computers?suzuki

Get a good sniffer or packet analyzer.

It will allow you to monitor what traffic is being sent across your network. You can also open the packets to see where they headed and where they are from and depending on your knowledge the content of the packet.

Is any software avail to monitor others in networking computers?virus

yes
Use a Sniffer application.Ettercap is extremely powerful in case of linux/unix(I dont know if it is available for windows) .For Windows, Ethereal is very good.
Yes; one is PCAnywhere.