FreewareVista Great Freeware
Freeware and free trials, tips and resources

Network

TCPView - view TCP activity plus handy whois

My IP's - Camtech 2000 utility shows IP addresses for all computers in your network

Alien IP - resolves IP's and hostnames to a large world map

XP TCP/IP Repair - resets Winsock Registry Entries, will remove all previously installed LSP's, can also repair TCP/IP stack

TCP Optimizer - SpeedGuide Utility for tweaking TCP/IP