Andermatt:
Alpina Sport - Ski equipment, rentals, service, mountain guiding, friendly service and knowledge about all things mountain related
Gemsstock - The local ski hill

Weather:
MeteoBlue - Excellent weather forecasting for switzerland
MeteoSwiss - Swiss national weather forecasting
SF Meteo - Up to date weather radar for Switzerland
Wetter3 - Long range weather map forecast for North Atlantic and Europe

Snow:
SLF - Swiss avalanche bulletins as well as snow depth maps.

Excellent Sport Shops We Work With Worldwide:

Europe:
Alpina Sport, Andermatt, Switzerland
Full Moons, Davos, Switzerland
Sport Jennewein, St. Anton, Austria

USA:
Sports Ltd, South Lake Tahoe, CA 
Alta Peruvian Lodge, Alta, UT