XSel is a command-line program for getting and setting the contents of the X selection. It can also append and have it follow a growing file (similar to tail -f).

This package provides a graphical program for learning Japanese characters, which also doubles as a dictionary lookup program. It requires a dictionary package, such as kanjidic (for learning kanji) or kanadic (for learning hiragana or katakana), although you can specify a custom dictionary file on the command line.

IPTraf-ng is an ncurses-based IP LAN monitor that generates various network statistics including TCP info, UDP counts, ICMP and OSPF information, Ethernet load info, node stats, IP checksum errors, and others.

MathJax was designed with the goal of consolidating the recent advances in web technologies into a single, definitive, math-on-the-web platform supporting the major browsers and operating systems.

Nikto is a pluggable web server and CGI scanner written in Perl, using rfp's LibWhisker to perform fast security or informational checks.