The BNC corpus: http://www.natcorp.ox.ac.uk/

BNC frequency lists: http://ucrel.lancs.ac.uk/bncfreq/flists.html

BNC 2014: http://corpora.lancs.ac.uk/bnc2014/

The British Academic Written English Corpus: https://www.coventry.ac.uk/research/research-directories/current-projects/2015/british-academic-written-english-corpus-bawe/

British and Irish legal information institute: http://www.bailii.org

Introductory course on corpus linguistics: http://www.lancs.ac.uk/fss/courses/ling/corpus/

David Lee's corpus website: http://martinweisser.org/corpora_site/CBLLinks.html

Mark Davies' BYU corpus website: http://corpus.byu.edu

Paul Nation's website: http://www.victoria.ac.nz/lals/staff/paul-nation.aspx

Search for phrases in the BNC: http://phrasesinenglish.org

The Bononia Legal Corpus: http://corpora.dslo.unibo.it/bolc_eng.html

W3 corpora website: http://www.essex.ac.uk/linguistics/external/clmt/w3c

Web as corpus: http://webascorpus.org/searchwc.html

Tom Cobb's website (lextutor): http://www.lextutor.ca/concordancers/concord_e.html

FLAX: Flexible Language Learning: http://flax.nzdl.org/greenstone3/flax

The Academic Word List (Averil Coxhead): https://www.wgtn.ac.nz/lals/resources/academicwordlist

The General Service List (updated by J. Baumann in 1995 based on West's earlier version of 1953): http://webhome.auburn.edu/~nunnath/engl6240/wlistgen.html

The New General Service List project: http://www.newgeneralservicelist.org/

Lancaster Stats tools online: http://corpora.lancs.ac.uk/stats/toolbox.php

The W-Matrix (Paul Rayson): https://ucrel.lancs.ac.uk/wmatrix/