Pollstar - The Concert Hotwire  
   A comprehensive and up-to-date concert venue database. The who's who of concert venue information.
   http://www.pollstar.com/

PlanetNightlife.com  
   Guide to nightclubs, restaurants, casinos and bars. Rate, review and discuss your city's nightlife. Covers Arizona, California, Florida, Nevada, and New York.
   http://www.PlanetNightlife.com

Open Mikes  
   A listing of music open-mike nights in the United States. Free to post or browse listings.
   http://www.openmikes.org/

Musi-Cal  
   Easy access to live music information worldwide: concerts, festivals and other musical events.
   http://www.musi-cal.com/

ClubLand  
   Nightclub directory and rave information. Search by state or by type such as Latin, dance, and biker. Some information on international clubs as well.
   http://clubland.biz

Knitting Factory  
   Company with music venues in New York and Los Angeles as well as a group of recording labels. Show schedules, site map.
   http://www.jazze.com