Santa Cruz Mountains Winegrowers Association
- Contains a map of the region, a list of wineries, event listings, and other tourist information.
- http://www.scmwa.com/

San Diego County Vintners Association
- Features information about members along with pictures of their events.
- http://www.sandiegowineries.org/

BlueWine
- California winery directory broken down by region/AVA.
- http://www.bluewine.com/californiawine.html

Not Napa
- Guide to Santa Ynez Valley wine tasting routes, accommodations and food.
- http://www.notnapa.com

Inside Napa Valley
- Visitor information, things to do, wineries, dining, shopping, and lodging information.
- http://insidenapavalley.com

San Luis Obispo Vintners and Growers Association
- Promotes the wineries of Edna, Arroyo Grande, Avila valleys and Nipomo in San Luis Obispo County. Contains a winery map, regional history, and event listings.
- http://www.slowine.com/

Sonoma County Wineries Association
- Representing Sonoma County wineries. Member directory, events, local history and tourist information.
- http://www.sonomawine.com/

Winegrowers of Dry Creek Valley
- Information about Dry Creek Valley wineries, growers, events, and a winery map.
- http://www.wdcv.com/

Santa Barbara County Vinters' Association
- Representing the wineries of Santa Barbara county. Appellation information, member wineries, tourism information and a store.
- http://www.sbcountywines.com/

Sip In Sonoma
- Book promotion site. Included is a background on the Sonoma County appellations and a listing of the wineries and tour companies in the Sonoma County area.
- http://www.grapeandbarrel.com

El Dorado Winery Association
- Representing the wineries of El Dorado County. Details of their "Passport Weekend" tasting event, winery list, photo galleries, recipes, and a winery award list.
- http://www.eldoradowines.org/

Calaveras Wine Association
- Includes links to Calaveras County wineries, a local history, event information, and maps.
- http://www.calaveraswines.org/

Amador Vintners On-Line
- The Amador Vintners' Association provides a map, winery profiles and links, event listings, and tourist information.
- http://www.amadorwine.com/

Temecula Valley Winegrowers Association
- Contains details on member wineries, online purchasing of event tickets, and information about lodging, dining, and local attractions.
- http://www.temeculawines.org/

TotalEscape: California Winery Guide
- Listing with map of all of the state's production regions. Direct links to winery sites.
- http://totalescape.com/active/leisure/winery.html

H. Montanile - A Winery Review
- Rates Napa and Sonoma wineries and creates customized itineraries.
- http://awineryreview.com/

Napa Valley Vintners Association
- Organization of more than 180 local wineries presents a winery finder, regional information, descriptions of winemaking, and event listings.
- http://www.napavintners.com/

California Wineries Mall
- Large catalog of wineries.
- http://cawinemall.com/

Sierra Wine Guide
- Covers El Dorado and Amador Counties, providing maps and articles, along with winery information and links.
- http://www.sierrawineguide.com/

Sonoma.com
- Information on the regions of Sonoma and its wineries. Also lodging, restaurants and events.
- http://www.sonoma.com/wineries/

TheFineWineGuide.com
- Links to wineries, educational resources and travel information.
- http://www.thefinewineguide.com/

Paso Robles Wine Country
- Facts and figures about one of the fastest growing vineyard and winery regions in the state.
- http://www.pasowine.com/

Steve Manick's California Wine
- Information and reviews of the state's wineries, wine basics and links.
- http://www.manick.com/Wine/

DrinkWine.com
- Links and addresses for wineries all over the state, plus lots of links to wine-related articles.
- http://www.drinkwine.com/