Gpart is a small tool which tries to guess which partitions are on a PC harddisk in case the primary partition table was damaged. It works by scanning through the device (or file) given on the commandline on a sector basis. Each guessing module is asked if it thinks a filesystem it knows about could start at a given sector. Several filesystem guessing modules are built in, and others can be added dynamically.
Fish Fillets NG is strictly a puzzle game. The goal in every of the seventy levels is always the same: Find a safe way out. The fish utter witty remarks about their surroundings, and the various inhabitants of their underwater realm quarrel among themselves or comment on the efforts of your fish. The whole game is accompanied by quiet, comforting music.
MaheshaNetBSD is a NetBSD Live USB distribution which has the IceWM Desktop and the same feel as all the author's MaheshaBSD-based products. A LiveCD can easily be made from it by running the /makeiso script in the root directory. It can be used for many things like viewing presentations (PDF files, images, etc.), handling recovery tasks, playing music, playing chess, surfing the Internet, etc. Linux emulation is activated. The advantage of this LiveUSB is that the USB pendrive is writable after booting (unlike other MaheshaBSD products), and users can thus easily install packages from the Internet. However, as USB flash drives do not like too many writes, the author keeps a few directories in memory (/tmp, /var, /etc.). MaheshaNetBSD lets you can write in Sanskrit.
tcpdump prints a description of the contents of packets on a network interface which match a given boolean expression. It can also be run with the -w flag, which causes it to save the packet data to a file for later analysis, and/or with the -r flag, which causes it to read from a saved packet file rather than to read packets from a network interface. In all cases, only packets which match the expression will be processed by tcpdump. tcpdump logs more than just TCP, IP, or ethernet packets, but has a whole suite of decoders, including ones for USB.