OkMap Desktop is an interactive GPS map software that will allow you to work with digital maps.

EarthView is a dynamic desktop wallpaper and screen saver, displaying beautiful views of the earth with daylight and night shadows.

MyRadar provides you with an easy-to-use app designed to display animated weather radar for your area - keeping you in the loop about exactly what is heading your way.

Stellarium is a free, Open Source planetarium for your computer that shows a realistic sky in stunning 3D. Also available as a Portable version.

Tray Weather is designed to provide real-time weather information for specific geographic locations in a small dialog and down in the systray.

KStars is a desktop planetarium that provides an accurate graphical simulation of the night sky from Earth's location.

Aladin Desktop allows the user to view archival sky atlases, astronomical images, surveys, and more.

Garmin Express is designed to help you manage your Garmin GPS devices by updating maps, activities and more.

MyTourBook is an open-source app to visualize and analyze tours recorded by a GPS device, bike or exercise computer, and ergometer.

MetarWeather is a utility for decoding METAR weather reports from around the world and displaying them in a simple report table.

Hallo Northern SKY is a free planetarium program to control your telescope via the ASCOM or INDI interface.

Gaia Sky is a real-time, 3D astronomy visualization software developed in the framework of ESA's Gaia mission to chart about 1 billion stars in our Galaxy.

PhotoLocator is a geotagging app capable of importing GPS traces from GPX and KML files and applying the GPS positions to JPEG files by synching with image timestamps.

OpenCPN provides you with a chart plotter and navigation app. Whether you're underway or making plans for an epic trip, this app will come in handy.

Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean.

The Weather Watcher Live application is your personal, real-time Windows desktop satellite weather station.

Stellarium Portable is a computer program that displays a realistic 3D sky and is available for free as an Open Source planetarium. Installer, Linux, and Mac versions are also available.

Earth Alerts allows you to monitor, via satellite imagery and other formats, in near real-time a variety of natural hazard events occurring around the world.

WinStars is a planetarium 3D simulator that accurately represents the position of celestial objects at a given moment. Free version also available.

Windows Maps provides you with everything needed to guide you anywhere you need to go.

Marble Portable is an interactive virtual globe and world atlas that allows you to explore the world in a fun and cool way. Installer version is also available.

Celestia Portable lets you explore the universe in three dimensions. Installer version also available

Celestia is a free space simulation that lets you explore our universe in three dimensions. Portable version also available.

GetNexrad converts radar dBZ (decibel relative to Z) to rainfall amounts with loops and graphical storm tracking.

WeatherMate is a little Windows program that gives you instant access to the weather forecast for tens of thousands of locations worldwide.

Weather Monitor is a real-time weather gadget for Windows.

iStreetView Downloader lets you enter a panorama into istreetview.com to print or transfer to a device to take with you.

MiTeC Weather Agent is a free app that enables you to view your local 5-day forecast, and it also includes moon phases as well as sunrise/sunset times for your region.

Cosmonium provides you with a 3D space exploration app that allows you to navigate the solar system from the comfort of your desktop.

Gpredict provides real-time satellite tracking and orbit prediction from a data-oriented interface.

ISS Tracker offers those that enjoy tracking the ISS a simple option to do so.

WinStars 2 is the free version of the popular 3D planetarium simulator that allows you to view the position of celestial objects.

AAS WorldWide Telescope enables you to explore the universe, bringing together imagery from the best ground and space-based telescopes in the world and combining it with 3D navigation.

SkyChart gives the amateur astronomer the ability to draw and map out the night sky. 64 Bit also available.

SkyChart gives the amateur astronomer the ability to draw and map out the night sky. Also available for 32 Bit.

sWeather is a configurable tray-based app that provides weather conditions for the places that are important to you.

NASA’s Eyes allows you to experience Earth and our solar system, the universe, and the spacecraft exploring them.

EasyGPS allows you to both upload and download waypoints, routes and more between your computer and your Garmin, Magellan or Lowrance GPS.

WeatherInfo provides weather data for your current location or any place you choose.

WeatherDan is a small and accurate virtual weatherman that runs in your system tray.

Marble is a virtual globe and world atlas — your Swiss army knife for maps. Portable version is also available.

YoWindow gives you the ability to watch weather like never before on Windows and Mac. See the weather picture, not just numbers.

View Mars with this program from NASA.

GPX Creator allows you to input a specific address to your GPS device using a USB connection - perfect for planning a trip's way-points a head of time.

Weather Beetle is a free desktop weather application that retrieves text and graphical weather forecasts and current conditions from the NOAA (National Oceanic and Atmospheric Administration) weather service.

Get up to date weather alerts featuring 4 different API's & millions of cities across the globe - powered by Yahoo Weather API, Openweather API, Forecast IO API & Wunderground API.

Get a quick overview on what is going on today's night sky.

A free and open source virtual planetarium and sky mapping program which tracks most celestial bodies.

World Wind lets you zoom from satellite altitude into any place on Earth.

The Overlooked Objects Log (OOLog) is very similar to The Ultimate Messier Object Log, except it deals with the 45 objects in Brent Watson's excellent book, "Finder Charts of Overlooked Objects."