Ledalite
Lighting solutions grounded in design experience and customer focus.
http://www.ledalite.com/

Lichtnet
Das Portal für die Beleuchtungsbranche.
http://www.lichtnet.de/

Lightsearch
The source for lighting specifiers and buyers.
http://www.lightsearch.com/

Luceonline
Vertical portal about the light, it offers many information and news, a section with elements of lighting engineering and electrotechnics, with a glossary, and also curiosities, suggestions and cultural articles; with references to the world of art, fashion, theatre, music and furnishing.
http://www.luceonline.it/home.htm