The Stanford NLP Group's Sentiment Analysis tool is a free, web based live demo based on a sentiment analysis treebank, trained to predict the sentiment in movie reviews. Users can test out the sentiment analysis model with their own text in the box provided. The dataset and code is available for download, and the sentiment analysis model is now integrated into Stanford CoreNLP.

SentimentBuilder is an online tool that performs text analytics on emails, reviews, feedback, chat data or any unstructured texts via Natural Language Processing. It's the only tool where you can upload a file for processing and then visually view the results in a Sankey Flow Report to quickly identify trends, issues and strengths and then customize each view, save and share! Export any result for your own offline analysis! Try the Always Free version today and upload your own data or try one of our sample files.