The Stanford NLP Group is a research team at Stanford University focused on natural language processing (NLP). They develop tools and resources that help computers understand and generate human language. Their work includes creating software for tasks like sentiment analysis, part-of-speech tagging, and named entity recognition. The group is known for its contributions to the field, including the popular Stanford CoreNLP toolkit, which provides a suite of NLP tools for various languages. They also publish research papers and collaborate with other institutions to advance the understanding of language technology and its applications.