The Stanford Parser is a natural language processing tool developed by the Stanford Natural Language Processing Group. It analyzes the grammatical structure of sentences, breaking them down into their components, such as nouns, verbs, and phrases. This helps in understanding the relationships between words and the overall meaning of the text. The parser can handle various languages and is widely used in research and applications involving text analysis, machine learning, and artificial intelligence. It provides both a probabilistic context-free grammar and a dependency parser, making it versatile for different linguistic tasks.