Szip performs data compression/decompression. It uses a limited order
sort transform. This transformation is related to the Burrows-Wheeler
transformation used in block sorting compression methods. The
difference is a fast, deterministic behaviour in time at some
compression loss.
Unzoo is a zoo archive extractor written by Martin Schoenert. If unzoo is
called with no arguments, it will first print a summary of the commands and
then prompt for command lines interactively.
Zip is a compression and file packaging utility. It is compatible with
PKZIP 2.04g (Phil Katz ZIP) for MSDOS systems. There is a companion to zip
called unzip (of course) which you can also install from the ports/package
system.
jday and j2d are command line utilities to convert calendar dates
to astronomical julian dates, and julian dates to calendar dates.
There is a corresponding library libjday.a which can be used for
the same functionality within applications.
The format used for Garmin maps has, in effect, a maximum size,
meaning that you have to split an .osm file that contains large
well mapped regions into a number of smaller tiles. This program
does that.
Stores information about a FITS header block in an object. Takes an hash with
an array reference as an argument. The array should contain a list of FITS
header cards as input.
p5-Astro is a set of assorted astronomical routines.
Astro::Time, Astro::Coord and Astro::Misc provide a collection of
useful astronomical routines written entirely in Perl (so no
hassling about installing external libraries is required).
SExtractor is a program that builds a catalogue of objects from an
astronomical image. Although it is particularly oriented towards
reduction of large scale galaxy-survey data, it performs rather
well on moderately crowded star fields.
XWorld displays a pretty picture of our earth as it would look if
viewed from the direction of the sun. The window is regularly updated.
You can use xworld in lieu of a clock.
Boodler is a tool for creating soundscapes -- continuous, infinitely
varying streams of sound. Boodler is designed to run in the background on a
computer, maintaining whatever sound environment you desire.