NapaYellowPages.com
- Lists wineries, restaurants, attractions, travel resources and other businesses in California's Napa Valley.
- http://napayellowpages.com/

Napa Valley Online
- Napa Valley wine country guide hosted by knowledgeable residents. Wineries, hotels, inns, spas, restaurants, tasting, parks, camping, tours, events, sightseeing, shopping, golf, maps, transportation, weather, and weddings.
- http://www.napavalleyonline.com

CERES - Napa County
- An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps.
- http://ceres.ca.gov/geo_area/counties/Napa/

Napa Valley
- Napa Valley wine, wineries, on-line wine sales, lodging, vacations, golf, current events, dining and chambers of commerce and lots of free stuff.
- http://www.napavalley.com/