dnstracer determines where a given Domain Name Server (DNS) gets its information from for a given hostname, and follows the chain of DNS servers back to the authoritative answer. For more details about dnstracer and it usage visit this informative page on dnstracer: http://www.mavetju.org/unix/dnstracer.php

What once started as a Jackpot Navigator emulator (hence the strange name) is now a nice serial sniffer and you can use it to send data on a serial line too. It’s sort of like a very simple terminal emulator, like picocom. But jpnevulator uses hexadecimal byte values to display and send along the line. [...]

RIG (Random Identity Generator) is a free replacement for a shareware program out there called ‘fake’. It generates random, yet real-looking, personal data. It is useful if you need to feed a name to a Web site, BBS, or real person, and are too lazy to think of one yourself. Also, if the Web site/BBS/person [...]

tcpick is a textmode sniffer libpcap-based that can track, reassemble and reorder tcp streams. Tcpick is able to save the captured flows in different files or displays them in the terminal, and so it is useful to sniff files that are transmitted via ftp or http. It can display all the stream on the terminal, [...]