The Corpus of Contemporary American English (COCA)
The Corpus of Contemporary American English (COCA) is the largest freely-available corpus of English, and the only large and balanced corpus of American English. COCA was released in 2008 and it is now used by tens of thousands of users every month (linguists, teachers, translators, and other researchers).
Project leaders: Mark Davies
Time of compilation: ?
Size: 520 million words (monitor corpus, 20 million words added every year)
Language: American English
Project home page: http://corpus.byu.edu
Reference line and copyright
Davies, Mark. (2008–) The Corpus of Contemporary American English (COCA): 520 million words, 1990-present. Available online at http://corpus.byu.edu/coca/.
Professor Mark Davies
Freely available at http://corpus.byu.edu/coca/. Requires registration.
Corpus of Historical Americal English (COHA)
CoRD Entry prepared by Jukka Tyrkkö. Approved by Mark Davies.