Utility Description
GNS. Run a real Cisco Router on your own PC with this excellent open source project
Wireshark. A free Network analyser. Another fantastic open source programme
One of the best free IP address calculators
Hyperterminal. A fix version of Hyperterminal. This stops the text getting corrupt on XP once it reaches the grey part
Putty. A better alternative to Hyperterminal as it also supports ssh, rlogin and the cut & paste works so much better
TFTP Server. A useful TFTP server which also supports FTP and Syslog servers
VLC. Excellent little utility for creating multicast traffic or for watching any video file without having to download a codec

If you are looking for other addtional programs then they are located in the members area click here to login (Customers only)