From: sendpornnotspan@gmail.com   
      
   kinda depends on wtf ur trying to do   
      
   thc-hydra login brute forcing tool   
   nmap      port scanning   
   samdump/samdump2  for getting the windows password for cracking later   
   aircrack/airodump   wifi haxoring   
   rainbowcrack/rtgen to generate rainbow tables and crack password hash's   
   tcpdump for network packet captureing   
   wintcpdump  for winderz ;)   
   etherreal/wireshark another packet sniffer with plugins like