Aerowinx 

Developers of a computer based simulator for the 747-400. 

Airline Simulator 

Fly 

fly! 

Fly! 2 

Glideslope 

Enthusiast's site devoted to the Precision 747-400 package. Reviews, links, product news, about and contact information. 

Nomissoft GmbH 

MD-83, MD-88 and B747-400 airliner simulation software. News, shop, forum, product and screen sample gallery, links, service and support. 

X-plane.com 

X-plane.org