A tool for NLP research, second language
learning, and app makers.
NGRAMS is a search engine and REST API for quick inquiries into the Google Books Ngram Dataset v3 — the largest publicly available source of ngram data. The service is intended for all kinds of applications related to language processing, research, teaching, and modeling. It can be used free of charge, for both commercial and non-commercial purposes.
At the moment NGRAMS supports the English, German, and Russian corpora.
NGRAMS is not open-source.