Lego

Baylit
Lego parts sales; view the inventory or find related links.
http://home.att.net/~baylit/

Blackened's Brick Mania
An online store to help people searching for specific parts and sets needed for their own creations. Custom kits available. Also, features Dan's Model Gallery.
http://www.brickmania.com/

Box-4-Blox
Storage system and solutions for Lego bricks.
http://www.box4blox.com/

BRICK Direct
Specializes in the sale of discontinued Lego products.
http://www.brickdirect.com/

BrickArms
Offers realistic looking, Lego-hand-compatible guns and weaponry.
http://www.brickarms.com/

BrickLink
Auction venue for registered users to buy and sell sets, bricks, and models.
http://www.bricklink.com/

BrickNet
Online shop selling a wide range of new and discontinued Lego toys. Australia.
http://www.bricknet.com.au/

BricWorx
Creates custom train models for resale. Provides list of products including the 801 Chessie System Engine, news, policies, contact, and ordering information.
http://www.bricworx.com/

Custom Lego Skyscrapers
Offers work to order.
http://www.angelfire.com/empire2/legoskyscraper/index.html

Educational Experience: Lego Dacta
Distributor located in Australia. Provides ideas, news, event information, robotic kits and training for schools, teachers, and students.
http://www.edex.com.au/ideas/lego/

The Guild of Bricksmiths
Features custom Lego kits, independently produced. Provides a history of Guild, image gallery, definitions, FAQ, and contact information.
http://www.bricksmiths.com/

Larry Pieniazek's Lego Trusted Intermediary Service
A service for people who are buying/selling Lego through the Internet.
http://my.voyager.net/lar/trusted_process.html

Lego Shop at Home
Manufactures plastic toy building bricks and minifigures. Browse Duplo, Technic, themed sets, video games, robotics, merchandise, and tickets for Legoland. [official site]
http://shop.lego.com/

LeoFun.com
Pre-owned Legos. Individual piece and bulk orders.
http://www.leofun.com/

Lions Gate Models
Produces limited edition craftsman Lego model building kits. Includes a product FAQ, and warranty information.
http://www.lionsgatemodels.com/

Mechanized Brick
Offers custom Lego kits for the military modeler. Includes description and price for T-74, Tiger 1, Sherman, M8, Greif, P40 and P51 WWII aircraft.
http://www.mechanizedbrick.com/

Moore Educational
Distributor for Lego Dacta in Australia. [order online or by mail]
http://www.mooreed.com.au/

My Own Beach
Classic Lego sets and custom Lego sculptures.
http://my-own-beach.com/legos.htm

PodBrix
Selling modified minifigs inspired by the popular ad campaign for portable music players. Frequently asked questions and online shop.
http://www.podbrix.com/