An online search engine that charts the frequencies of any set of comma-delimited search terms using a yearly count of the terms' occurrences found in sources printed between 1500 and 2008 that are available in Google Books.
A toolkit for for statistical natural language processing, document classification, clustering, topic modeling, information extraction, and other machine learning applications.
A text analysis environment that combines visualization, information retrieval, sensemaking and natural language processing to make the contents of text navigable, accessible, and useful.