Here are selected links to origami web-sites around the world. Also visit my personal web-site OuSaAn if you have plenty of time to waste.
Joseph Wu (Canada)
Robert J. Lang (USA)
Michael LaFosse (USA)
Paul Jackson (Israel)
Crimp (French artists)
Jean-Claude Correia (France)
David Derudas (Italy)
Hojyo Takashi (Japan)
Mouvement Français des Plieurs de Papier
Centro Diffusione Origami (Italy)
Japan Origami Academic Society
Asociación Española de Papiroflexia
Dave's Origami Emporium (traditional models)
Gilad's Origami Page (book reviews)
Orihouse (archive-like)
Bits of Smith (philosophical thoughts)
Origami Underground (not for children!)
Origami-L (the archives)
Origami (awarded at ThinkQuest@JAPAN '98)
K's Origami > Spherical Window