 | Adriano Ramos Pinto, S.A. | Produces Ports, dry reds, and brandy. Contains descriptions of the products, the vineyards, their museums, and the company. [Flash Required] |
 | Calem | 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. |
 | Casa da Ãnsua | 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] |
 | Croft Port | Port house founded in 1678. Presents its history, products, vineyards, how port is made, the types of port, and a glossary. [Flash required] |
 | Dão Sul - Sociedade Vitivinicola, S.A. | One of the new wine producers that have been revitalising the Dão region. Specializes in Quinta. |
 | Dow's Port | Founded in 1798, and 100% family-owned. One of the great names in Port. |
 | Fonseca Guimaraens | One of the most famous Port houses. Site is also available in French and Portuguese. |
 | Graham's Port | Universally acknowledged to be a leader in the field of Vintage Port. |
 | José Maria da Fonseca | One of the oldest producers of Portuguese table wines and Setubal dessert wines. Markets under several other brand names, including Lancer's. |
 | Quinta de la Rosa | Small family-owned vineyard producing Ports, wines and olive oils. Also offers accommodations on the estate |
 | Quinta de Lemos | 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] |
 | Quinta de Roriz | Makers of Port and Douro table wines. Contains information about products, vineyards, history, and distributors. |
 | Quinta do Noval | 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 | 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 do Tedo | A single quinta Port producer in the Alto Douro region. Features product descriptions, reviews, an award list, a newsletter, and a company overview. |
 | Quinta dos Vales - Wine and Art | Quinta do Vales is a new project dedicated to the production of high quality wines, art and wildlife located in the western Algarve / Portugal. |
 | Real Companhia Velha | One of the leading producers of Port and the largest owner of the premium land in the Douro Valley. |
 | Rozes Porto | Includes a profile of this Port producer, along with descriptions of wines, a list of distributors, and a few recipes. |
 | Symington Port and Madeira Shippers | Owns Warre, Dow, Graham, Smith Woodhouse, Gould Campbell, Quinta do Vesuvio and the Madeira Wine Company. |
 | Taylor, Fladgate and Yeatman | One of the oldest and most famous Port houses. Site also available in French and Portuguese. |
 | The House of Sandeman | Specializing in Port and Sherry for more than two hundred years. |
 | Vallegre | Wines from Quinta da Vista Alegre's vineyards of the Douro Valley. |
