 Symington Port and Madeira Shippers - http://www.symington.com/ Owns Warre, Dow, Graham, Smith Woodhouse, Gould Campbell, Quinta do Vesuvio and the Madeira Wine Company. |
 The House of Sandeman - http://www.sandeman.com/ Specializing in Port and Sherry for more than two hundred years. |
 Croft Port - http://www.croftport.com/ Port house founded in 1678. Presents its history, products, vineyards, how port is made, the types of port, and a glossary. [Flash required] |
 Smith Woodhouse Port - http://www.smithwoodhouse.com/ Founded in 1784, Smith Woodhouse has consistently been judged as one of the finest of all Vintage Port producers. |
 Burmester - http://www.burmesterporto.com/ Port wine producer located near Pinhão. Includes a history of this company which has been shipping port wine since the 18th century, and description of the vineyard and products. |
 Quinta de la Rosa - http://www.quintadelarosa.com/ Small family-owned vineyard producing Ports, wines and olive oils. Also offers accommodations on the estate |
 Quinta do Noval - http://www.quintadonoval.com/ Douro based, renowned producer of vintage Port, particularly its Nacional. Site offers information on the vineyards, the winemaking technique and the wines. |
 Quinta do Portal - http://www.quintadoportal.com/ A family-run winemaking company based in the Douro Valley in northern Portugal. Information on its white and red wines as well as a range of Ports. |
 Quinta de Lemos - http://www.quintadelemos.com/ Producer in the Dão region, whose first harvest was in 2000. Includes descriptions of grape varieties, a regional history, and a view of the vineyards. [Flash required] |
 Graham's Port - http://www.grahams-port.com/ Universally acknowledged to be a leader in the field of Vintage Port. |
 G Porto - http://www.gporto.com/ Gilbert's line aimed at young adults. Includes product descriptions, cocktail recipes, and an award list. [Flash Required] |
 Kopke Ports - http://www.kopkeports.com/ Port producer and exporter. Includes a company history and product descriptions. |
 Dão Sul - Sociedade Vitivinicola, S.A. - http://www.daosul.com/ One of the new wine producers that have been revitalising the Dão region. Specializes in Quinta. |
 Quinta de Ventozelo - http://www.quintadeventozelo.com/ Produces Douro and Port wines. Includes product details, reviews, an award list, a photo gallery, and a vineyard map. |
 Quinta de Roriz - http://www.quintaderoriz.com/ Makers of Port and Douro table wines. Contains information about products, vineyards, history, and distributors. |
 Dow's Port - http://www.dows-port.com/ Founded in 1798, and 100% family-owned. One of the great names in Port. |
 Sogrape - http://www.sogrape.pt/ Produces table and fortified wines, under numerous brand names, including Mateus, Offley, and Sandeman. Includes a company profile, along with information about the vinyards and brands. [Flash required] |
 Real Companhia Velha - http://www.realcompanhiavelha.pt/ One of the leading producers of Port and the largest owner of the premium land in the Douro Valley. |
 Cavipor - http://www.cavipor.pt/ Produces still, sparkling, and fortified wines from the major regions under several brand names. Includes a portfolio, a company profile, and news. [Flash required.] |
 Vallegre - http://www.vallegre.pt/ Wines from Quinta da Vista Alegre's vineyards of the Douro Valley. |
 Taylor, Fladgate and Yeatman - http://www.taylor.pt/ One of the oldest and most famous Port houses. Site also available in French and Portuguese. |
 Porto Barros - http://www.porto-barros.pt/ Founded in 1913, this producer specializes in old tawnies, also producing Douro table wines and brandy. Includes product descriptions, a company history, and vineyard information. |
 Calem - http://www.calem.pt/ Founded more than 140 years ago, the House of Calem owns grape vineyards and ageing cellars, and produces a wide range of Ports for a number of markets. |
 José Maria da Fonseca - http://www.jmf.pt/ One of the oldest producers of Portuguese table wines and Setubal dessert wines. Markets under several other brand names, including Lancer's. |
 Cortes de Cima - http://www.cortesdecima.pt/ Located in the Alentejo region in southeast Portugal. Harvest report and ordering information. |
 Rozès Porto - http://www.rozes.pt/ Includes a profile of this Port producer, along with descriptions of wines, a list of distributors, and a few recipes. |
 Fonseca Guimaraens - http://www.fonseca.pt/ One of the most famous Port houses. Site is also available in French and Portuguese. |
 Casa da Ínsua - http://www.casadainsua.pt/ Dão producer of reds and a white. Includes descriptions and pictures of the manor and its gardens. Also contains product information and a property history. [Flash required] |
 CARM - Casa Agrícola Roboredo Madeira, Lda. - http://www.carm.pt/ Produces a range of wines from organic grapes in the Douro region. Includes product information and a company overview. Also produces estate olive oils. [Flash required] |
 Adriano Ramos Pinto, S.A. - http://www.ramospinto.pt/ Produces Ports, dry reds, and brandy. Contains descriptions of the products, the vineyards, their museums, and the company. [Flash Required] |
 Porto Solene - http://www.portosolene.com/ Promoting their ruby and tawny reserves. |
 Niepoort - http://www.niepoort-vinhos.com/ Describes Niepoort's distinctive garrafeira, as well as other port types. |
 Martinez - http://www.martinez.pt/ Featuring a map of the estates and lodges owned by Martinez-Cockburn's. |
 Manoel D. Poças Júnior - http://www.pocas.pt/ One of the few remaining estates still owned by a Portuguese family. Has information on the Porto Poças 2000 vintage. |
 Quinta do Vesuvio Vintage Port - http://www.quintadovesuvio.com/ Symington-owned vineyard producing single-quinta ports since 1989. |
 Casa do Valle - http://www.casadovalle.pt/ Describing the red, white and rosé wines of José Ferrão. |
 Wiese and Krohn - http://www.krohn.pt/ Includes a list of declarations of Krohn vintage port since 1957. |
 Quinta do Tedo - Porto Wines - http://www.quintadotedo.com/ 18th Century, Single Quinta Porto winery producing vintage ports since 1995. |
 Ouinta de Santa Eufémia - http://www.casasantaeufemia.com/ The estate's history, and its LBV and tawny ports. |
 Bem Vindo ao C. da Silva - http://www.cdasilva.pt/ The history and cellars of the C. Da Silva Port Company. |
 Sociedade Agrícola e Comercial dos Vinhos Messias - http://www.cavesmessias.pt/ Describes, with some technical information, the products including the Messias port. |
 J. H. Andresen - http://www.jhandresen.com/ Animated guide to the products and cellars of the port house founded by Jann Hinrich Andresen. |
 Bacalhoa - http://www.bacalhoa.com/ Produces red, white, sparkling, and fortified wines. Includes product descriptions and directions to the winery. Additional information is available in Portuguese. |
 Borges Wines - http://www.borgeswines.com/ Pictures and descriptions of the available vintages of reds, whites, rosés, sparklings and ports. |
 Montez Champalimaud - http://www.quinta-do-cotto.pt/ History, the four brands, the grapes and export markets of Quinta do Côtto. |
 Cockburn's Port of Portugal - http://www.cockburns-usa.com/ Describing the recent innovations in the port production process. |
 Churchill's - http://www.churchills-port.com/ Tasting comments on the vintage port, the LBV, crusted, tawny, and white ports. |
 Delaforce - http://www.delaforce.com/ Information about the Delaforces, an old family of Huguenot origin, their company and their ports. |