NetCut - NetCut is a Software that helps you admin your network by purely on ARP protocol.
NetSetMan - Are you tired of changing your network configuration on your laptop every day?
SelfishNet - Block anyone or any device from using your internet
TCP/IP Manager - Designed to help computer users keep track of their network configuration in different locations.
WifiKill - App with ability to block other devices from network
Fast IP Changer - IP Changer is a free, fast and easy way to change your IP address, DNS or WINS. It's small, simple and build for windows...and most importantly, it works really well!