Quiddler

Cornerstone Products
Description and purchase of the game.
http://www.nvo.com/cornerstonep/quiddler/

House of Cards
Overview of the game and purchase.
http://thehouseofcards.com/word/quiddler.html

Out of the Blue Ltd
Description and purchase of the game.
http://www.outofthebluetoys.com/quiddler.html

Set Enterprises
Official publisher with rules, tips and tricks.
http://www.setgame.com/quiddler/