Rocketry.Org maintains a large web database of suppliers for anything experimental rocketry enthusiasts could want, as well as a global rocketry organizations database and book lists.

Connecticut Tripoli and National Association of Rocketry. Lists launch information, recent launch photos, contact information or member application.

Reference resources about Jetex and Jet-X micro rocket motors and propellants, plus gas generator experiments and propellant development projects

Digital electronic firing systems for the model rocket enthusiast.

Publications, articles, software and discussion groups about chemical rocket motors.

NAR R and D Report

This site answers the question: What is high power rocketry?

Tutorials on amateur experimental rocketry, along with videos, launch reports, and pictures.

Tripoli is a non-profit organization dedicated to the advancement and operation of non-professional high power rocketry. Tripoli has members in the United States and 20 countries around the world.

SPL develops propulsion elements for sounding rockets like LOX valves, injectors, regeneratively cooled combustions chambers, igniters, propellant feeding systems and thrust test stands.