Dropzone Safety and Training
   Safety and training advice for skydivers at all levels. Skydiving emergencies, student course material, and related articles.
   http://www.dropzone.com/safety/

Parachute Jump Calculation
   Freefall simulation, to determine the most likely trajectories of (groups of) skydivers with different fall rates. [Java]
   http://lensmoor.org/cgi-bin/chute.cgi

Parachutes Safely
   Information on flying and landing high performance parachutes with safety in mind.
   http://www.afn.org/skydive/sta/flynland.html

Skydiving Safety Training
   Website on skydiving safety training.
   http://www.afn.org/skydive/sta/

Sport Parachutist's Safety Journal
   Information about equipment, environments and human factors.
   http://www.MakeItHappen.com/spsj/