- This program gives you raw access to the kernel time variables. For a machine connected to the Internet, or equipped with a precision oscillator or radio clock, the best way to keep the system clock correct is with xntpd. However, for a standalone intermittently connected machine, you may use adjtimex instead to at least correct for systematic drift. Adjtimex can optionally adjust the system clock using the CMOS clock as a reference, and can log times for long-term estimation of the drift rates.
- aenig4 emulates the Enigma M4 cipher machine used by the U-boot division of the German Navy during World War II. It can be used as well to emulate the Enigma I machine (M1, M2, M3).
- AeroCalc is a python package that performs various aeronautical engineering calculations. Currently, it contains the following main modules:
- 'Aewan' lets users create and edit ASCII art. Users move the cursor around with the arrow keys, "paint" characters by pressing the corresponding key, and choose foreground and background colors, and bold and blink attributes, with dialog boxes. They can also select, move, copy, and paste rectangular areas of the canvas. Aewan supports "intelligent" horizontal and vertical flipping (e.g., it converts "\" to "/", etc) and can work with multiple layers, turn transparency and visibility on and off for each layer, and change the order of the layers. Thus, each layer can be edited independently to generate a composite drawing. Layers can also be used as frames for an animation, thereby creating ASCII animations.
- Agecalc is a utillity that can be used to calculate dates since birth, what day a person was born, days since last/to next birthday and other data.
- Pairwise (aka "all-pairs") test combinations generator written in Python. Allows one to create a set of tests using "pairwise combinations" method, reducing a number of combinations of variables into a lesser set that covers most situations.
- Allegro is multi-platform game programming library for C/C++ developers distributed freely, that provides many functions for graphics, sounds, player input (keyboard, mouse and joystick) and timers. It also provides fixed and floating point mathematical functions, 3d functions, file management functions, compressed datafile and a GUI. It can also be used for other types of multimedia programming.
- Anolis is an HTML document post-processor that takes an input HTML file, adds section numbers, a table of contents, and cross-references, and writes the output to another file.
- Anonymine was an anonymous minesweeper, but Anonymine is its name now. It's a curses mode minesweeper that can be solved without any guessing. It seems to be the only minesweeper with von Neumann neighbourhoods. It also supports the traditional Moore neighbourhoods and hexagonal gameplay. See it in action
- Apydia is an API reference documentation generator for Python. It's designed as an instantly serviceable replacement for Pudge's API-documentation generator. It won't generate complete websites from reST etc. like Pudge does, though - Apydia is only about the API.
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