Name	Description	Size	Cost	Web Site
Netstat Live	Network Monitoring software	257K	Free	www.analogx.com
Proxy	Internet Proxy Server	251K	Free	www.analogx.com
Advanced Admin Tools	Port Scanner, Network Monitor, System Monitor and more	1.3M	$39.95	www.glocksoft.com
Server Watch	Server and Services monitor	591K	Free	www.jpsoft.dk
VMail	Browse your POP3 mailbox, before downloading	750K	Free	www.jpsoft.dk
SamSpade	Ping, Traceroute, Whois, nslookup	1.8M	Free	www.samspade.org
Advanced Subnet Calculator	Er, an IP Subnet calculator	6.3M	Free	www.solarwinds.net
TDImon	TCP and UDP Connection Monitor	96K	Free. Upgradable to TCPView	www.sysinternals.com
TeraTerm	Telnet Client. See also the SSH client addon at http://www.zip.com.au/~roca/ttssh.html	945K	Free	Tera Term Homepage
WS_Watch	Network Host Monitor	300K	Free	Ws_Watch

Un*x Software

Note, some of these apps are available for Windows NT as well as Linux, Solaris and BSD.

Name	Description	Size	Cost	Web Site
MRTG	SNMP Traffic Grapher and Network Monitor	Varies for different versions	Donation	MRTG
Nessus	Vulnerability Tester	Varies for different versions	Free	www.nessus.org
nmap	Port Scanner	Varies for different versions	Free	www.nmap.org
Ethereal	Network Analyser	Varies for different versions	Free	www.ethereal.com