In the current social, technological and economic context, customers make their decisions based mostly on the opinion of other consumers. On the other side, companies require quick feedback from their customers in order to adapt to their needs in real time. The effective connection between these two aspects relies on opinion mining tools, which automatically process consumers’ reviews and opinions about products or services. This paper proposes the analysis and prediction rating from customer reviews who commented as open opinion using Machine Learning Classifiers and SentiWordNet.