3D Kite flying  
   3D VRML kite flying simulator.
   http://utopia.knoware.nl/users/pr-stack/3dpage.htm

Foilmaker  
   Software for the design and construction of ram-air inflated traction kites.
   http://www.foilmaker.co.uk

The Java Rev  
   The JAVA Rev is a kite simulator, that allows You to try flying a stack of three Revolution kites. The kites are controlled using the mouse, for forward/backward and left/right turn.
   http://www.godset.dk/rolf/javarev.htm

Bob's Java Kite  
   Playable simulation of a dual line stunt kite.
   http://www.bsteele.com/kite.html

Brown paper kite site  
   Three programs that calculate the size of a kite from figures supplied by the user.
   http://www.mis.net.au/max/kite/software.html

Surfplan  
   Models single skin foils, double skin foils and inflatable leading edge kites. Export 3D models or 2D plans to CAD programs.
   http://www.wirelessdatasys.com/dea/kites/surfplan/

Animated STACK Competition Figures  
   Flash animations of all the STACK competition figures, including individual, pairs and team, dual and multi-line.
   http://www.reeddesign.co.uk/kites/index.html