General Fireworks Information 

Pyrobilia
Firework Reviews
Pyrotechnic Innovations
Short Fuse Pyrotechnics
Larry Crump's Fireworks Pages  
Fireworks Review
Fireworks Land
Dan William's Pyro Page
Toni Busuttil's Fireworks Page
Mad Mac's Pyro Page
NOVA Online: KABOOM!
Practical Pyrotechnics
Pyroking's Fireworks Library
Fire-Works.it - an Italian fireworks site.  
Fireworks Applet - shoots fireworks when you click your mouse.
Make Your Own Rocket/Firework Igniters

Pyro Purity Test! - compiled by John Dubois

Fireworks Suppliers

Boomtown Fireworks - Washington State-based consumer fireworks retailer
Kneppy's Fireworks
Pyro Supplies
International Fireworks
Fireworks R Us
Skylighter - Firework and Pyrotechnic Chemicals, fuse, books, etc.
Fireworks Outlet
July 4 Ever Fireworks
Dirt Cheap Fireworks
Washington Fireworks - Washington's Year-round Source for Quality Fireworks
Wholesale Fireworks
Pyro Creations

Clubs and Organizations

Heartland Pyrotechnic Organization
Connecticut Pyrotechnic Association
Western New York Pyrotechnic Association
Western Pyrotechnic Association
The National Counsel on Fireworks Safety
The Pyrotechnics Guild International
Australian Fireworks Enthusiasts Association - help them change government legislation to legalize the safe use of Consumer fireworks in Australia

Firing Systems Suppliers

ODA Enterprises - electrical firing equipment
Advanced Pyrotechic Systems
Pyroshot - Australian pyrotechnic equipment

Government & Legal 

CPSC - Consumer Product Safety Commission
BATF - Bureau of Alcohol, Tobacco, and Firearms
DOT - Department of Transportation

Legal Services for firework enthusiasts, by Greg Malcolm - "I provide a legal service for fireworks enthusiasts that gives them a variety of legal services should they get themselves innocently in trouble with any firework issue (legal advice, legal letters written, documents reviewed such as the NFPA 1123 code, etc)."

  Pyro Art - fireworks label artwork

Chemistry Information 

Online Periodic Table