Lego
Baylit, Blackened's Brick Mania, Box-4-Blox, BRICK Direct, BrickLink, BricWorx, Custom Lego Skyscrapers, Educational Experience: Lego Dacta, Larry Pieniazek's Lego Trusted Intermediary S, Lego Shop at Home
Astro-logix
Create complex and beautiful fractal stars and 3D geometric shapes.
Atollo
Flexible models, from articulated figures to geometric space structures.
Gridblox
Cubical wooden blocks with notched corners that interlock by gravity.
Kapla USA
Wooden construction blocks from France, with a long thin shape, and books with suggested projects. Provides photo gallery of museum exhibits, and workshop information.
Link-Kit
Also known as Omagles, a building toy to create an unlimited variety of child-size toys for climbing, riding or pretending.
Lumiere Link
Building toy is transparent and free-form. Illinois, USA. [order online or by fax, phone or mail]
The Construction Site
A large variety of construction toys including brand names such as t.c. timber, K'nex, Lincoln Logs, Tinkertoy and Exin Castles.
Wedgits
Wedge shaped building blocks construction set. Includes design ideas and worldwide list of dealers.