The Wolfram Language has not only convenient built-in multilingual dictionaries, but also built-in information on word meaning, structure, and usage, as well as the relationship between words. Together with the Wolfram Language's tightly integrated string manipulation functions, visualization, and data import and export, this provides a uniquely powerful platform for natural language computing.
DictionaryLookup — look up words in English and other dictionaries using string patterns
WordData — properties of words and networks of relationships between them
Classify — classify text based on language, topic, sentiment, or arbitrary training
Import — import or "scrape" text from all standard formats
LanguageData — data on 6000+ languages
ExampleData — access to standard sample texts, including complete books
WikipediaData — full information from Wikipedia