Breeders

Constrictors Unlimited - Pythons & Boas
Graziani Reptiles - Ball Pythons
Heather's Herps - Ball Pythons
J. Kobylka Reptiles - Ball Pythons
Magikal Morphs - Ball Pythons
NERD - One of (if not THE) largest collections of ball python morphs
OzzyBoids - Ball Pythons & Boa Constrictors
The Painted Python - Ball & Blood Pythons
ProExotics - Reptiles & Supplies - Home of the IR Temp Gun!
Royal Constrictor Designs - Boas, ball pythons, chondros, & more
Sisco Reptiles - Ball Pythons & Tegus
Vida Preciosa International - Boas & Pythons
VMS Herp - Leopard geckos, ball pythons, and other herps
White Diamond Reptiles - Ball Pythons

Husbandry & Supplies

The Bean Farm - Reptile Supply
Boaphile Plastics - Awesome cages & racks
LLL Reptile - Reptile Supply & Feeders
Microscope.com - Microscopes for all occasions!
Mulberry Farms - Food for your reptiles!
Reptile Basics - Reptile Supply
Reptile UV - The best UV bulbs money can buy!
Spyder Robotics - Herpstat controllers

Other Resources

BeardedDragon.org - Bearded Dragon Discussion
Beautiful Dragons - Lots of info about bearded dragons
Crested Gecko - Leopard, Fat-Tail, Crested, Leachianus Geckos & More!
Fauna Classifieds - Reptile Classifieds, Board of Inquiry, General Herp Discussion
Kingsnake.com - Reptile & Amphibian Classifieds
USARK - U.S. Association of Reptile Keepers - Protect your rights!