The choice of the right process for casting components is a complexactivity, and impacts directly on the design and manufacturing of the product. A single failure in the casting process selection can increase design and production time and, in critical cases, result in a collapse of the manufacturing and assembly of components. This process is usually based on guidelines scattered in the literature, or based on the designer's accumulated experience, but this action could be carried out by software containing a casting process database that can be employed during the product development stage, assisting the designer. In this context, our goal is to adapt a method for selection of casting processes previously developed into a web platform to support casting process definition. The adopted selection method uses Quality Function Deployment (QFD) and Design for Manufacturing (DFM) principles to provide a structure to support casting selection decision based on part features and process demand. The proposed software was developed for the Web using HTML and JavaScript, providing better usability than the previous format of the proposed selection method using spreadsheets. For validation, ferrous and nonferrous cast parts were analyzed using the proposed web platform. The results were compared with the selector provided by the American Foundry Society and with processes actually used in the industry. Thus, the results showed a good relationship with the other methods, also providing a quantitative classification (prioritization) of the results. In addition, this software supports the design of the manufacturing process by means of a checklist to adapt the part to the metal casting process presented to the designer.