The most powerful and effetive password sniffer. Ace Password Sniffer can listen on your LAN and enable network administrators or parents to capture passwords of any network user. Currently Ace Password Sniffer can monitor and capture passwords through FTP, POP3, HTTP, SMTP, Telnet, and etc. It works passively and don't generate any network traffic, therefore, it is very hard to be detected by others. No need to install additional software.