MAME is a hardware emulator: it faithfully reproduces the behavior of many arcade machines (it is not a simulation). This program is not a game but can directly, through ROM images, run the complete system of these old arcade machines. These ROMs are subject to copyright and it is in most of the cases illegal to use them if you do not own the arcade machine.

The rules are simple: you ride a light cycle (a kind of motorbike that can only turn 90 degrees at a time, leaves a wall behind and cannot be stopped) and have to avoid running into walls while at the same time you have to try to get your opponent to run into them.

gopchop cuts and merges MPEG2 video streams. gopchop uses a method to cut streams that does not require re-encoding, and therefore is fast and not prone to the artifacts and degradation of quality inherent in re-encoding. However, cuts are limited to I-frames or group-of-picture (GOP) boundaries. These frames occur frequently enough, and often times at scene transitions, so that gopchop's method is adequate for many applications.

A science-fiction thriller set in a bleak post-apocalyptic vision of the future, Beneath a Steel Sky revolves around "Union City", where selfishness, rivalry, and corruption by its citizens seems to be all too common, those who can afford it live underground, away from the pollution and social problems which are plaguing the city.

LyX is an almost WYSIWYG-frontend for LaTeX. It makes the power and typesetting quality of LaTeX available for people who are used to word processors. Since LyX supports LaTeX's concept of general mark-ups, it is even easier and faster to create professional quality documents with it than with usual word processors. It is also possible to use LaTeX commands within LyX, so nothing of LaTeX's power is lost.

galculator is a scientific calculator. It supports different number bases (DEC/HEX/OCT/BIN) and angles bases (DEG/RAD/GRAD) and features a wide range of mathematical (basic arithmetic operations, trigonometric functions, etc) and other useful functions (memory, etc) at the moment. galculator can be used in algebraic mode as well as in Reverse Polish Notation (RPN).