Comsumes only 2% of system resources 
Multi-threaded - no hangs! 
Unobtrusive tray application - saves screen real estate 
Copy your local IP, hostname, or an ASCII character to the Windows clipboard 
Clipboard viewer 
Finger client 
FTP client 
Raw HTTP Browser 
Ping 
Trace Route 
SMTP client 
Telnet client with VT100 emulation 
NTP (Network Time Protocol) client 
Whois client 
Current Connections - lists all connections to and from your computer 
Download Manager - download a list of HTTP files 
Name Scanner - resolve a block of IPs 
NSLookup - convert IPs to Hostnames or visa versa 
Patience - clean the spam out of your email account 
Port Info - look up a port number in a database 
Service Scanner - check the daemon name/version on different ports of an IP block 
Site Checker - check to see if your favorite sites have been updated 
Address Book - maintain a detailed list of contact 
Notes - keep multiple notes handy (good for book/music/movie lists) 
Passwords - keep all of your passwords in one secure place 
To Do List - keep track of all the things you need to do 
Clear the Start Menu | Documents list 
Clean out the Windows temporary directory 
Conversions - convert one unit to another 
Grep - search the files on your hard drive 
Password Generator - create strong, random passwords 
UUEncode - encodes/decodes .uue files 
Check Mail - tell you how many messages are in your mailbox 
Finger Server 
IdentD Server 
Portscan Detection - alerts you if someone is portscanning you 
Port Watcher - keeps track of all connections for up to 5 different ports 
Stay Alive - keeps your ISP from dropping your connection 
Extensive help file 
User-defined global hot keys - hit Ctrl+Shift+M to check your mail! 
Plus an incredible interface!