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This is a Perl module that gives access to several GPS protocols, such as Garmin, NMEA, and Magellan. It works in Unix and Win32.

A tool to "stamp" photos taken with digital camera with a location, where they were taken. It uses the GPS coordinates saved in GPX format.

The General Astrodynamics Library (GAL) is a numerical library for C and C++ programmers. It is free software under the GNU General Public License. The library provides a wide range of astrodynamical routines such as ephemerides, earth orientation, and orbit propagation. There are over 170 functions in total with an extensive test suit

This program converts OpenStreetMap data into a map that can be loaded onto a Garmin GPS device. It does the conversion in one step without depending on any other program.

GMapCatcher is an offline maps viewer. It downloads CloudMade, OpenStreetMap or Yahoo Maps tiles automatically, display them using a specific GUI. User can view the maps while offline.

Osmosis is a command line java app for processing OSM data. The tool consists of a series of pluggable components that can be chained together to perform a larger operation. For example, it has components for reading from database and from file, components for writing to database and to file, components for deriving and applying change sets to data sources, components for sorting data, etc. It has been written so that it is easy to add new features without re-writing common tasks such as file or database handling.

A generic object orientated astronomical catalogue object.

This module provides a large number of physical constants which are useful to astronomers. The module itself is essentially a wrapper around the ASTROCONST package of Jeremy Balin.

Astro::Coords is a class for manipulating and transforming astronomical coordinates. Can handle the following coordinate types: - Equatorial RA/Dec, galactic (including proper motions and parallax) - Planets - Comets/Asteroids - Fixed locations in azimuth and elevations - Interpolated apparent coordinates For time dependent calculations a telescope location and reference time must be provided. See Astro::Telescope and DateTime for details on specifying location and reference epoch.

Astro-satpass contains classes needed to predict satellite visibility, and a demonstration application (satpass) that makes use of these classes.