Corpora

https://www.natcorp.ox.ac.uk/index.xml – BNC

https://www.lextutor.ca/

https://www.lextutor.ca/concordancers/multi/ – мультиконкордансы

https://beta.sketchengine.co.uk/open/–

https://corpus.byu.edu/coca/?c=coca&q=11080967 – COCA: Corpus of Contemporary American English

https://quod.lib.umich.edu/m/micase/ - Michigan Corpus of Academic Spoken English, homepage

https://micase.elicorpora.info/ – Michigan Corpus of Academic Spoken English

https://anc.org/ – The American National Corpus (ANC) https://linserv1.cims.nyu.edu:23232/ngram_oanc/ – The American National Corpus, open access

https://ruscorpora.ru/index.html – национальный корпус русского языка

https://ruscorpora.ru/search-main.html

(https://www.gramota.ru/ – Gramota.ru – интересный портал, посвященный русскому языку (при поддержке Института русского языка РАН)).