www.bindshell.net hosts some nice networking and other tools, take a look at:
* synscan - A very quick half-open portscanner with optional multithreaded protocol specific probing tool.
* ipsort - takes input from standard in, a file or list of files and sorts the ip addresses.
* rfidtool - is a linux command line tool for editing rfid tags. Functionality includes reading, writing, saving, loading and erasing. It currently supports ACGs PCMCIA/CF Multi-Tag Readers.
* massresolve - This program performs reverse dns lookups for network blocks or an input file and supports multi threading.
* kismet-parse - kismet-parse is a small perl script for parsing kismet network files. It displays information relating to the MAC address of the discovered access points and clients
