Lightsearch.com

Searchable directory of lighting sites.
http://www.lightsearch.com/

Lighting-Linx

Information about the lighting industry, with a database to search companies and products.
http://www.lighting-linx.com/

Lighting.com

Portal for lighting professionals with searchable listings of vendors, discussion forum and lighting industry news.
http://www.lighting.com/

The LightNetwork

An online community for theater lighting professionals and students with news and discussion forums.
http://forums.delphiforums.com/lightnetwork/start

Lightforum.com

Resource center for the lighting community with lighting projects, articles and a discussion forum.
http://www.archlighting.com/architecturallighting/al/index.jsp