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Wmatrix is a software tool for corpus analysis and comparison. It provides a web interface to the USAS and CLAWS corpus annotation tools, and standard corpus linguistic methodologies such as frequency lists and concordances. It also extends the keywords method to key grammatical categories and key semantic domains.

Once you have successfully placed an order for Wmatrix usernames, the login details will be emailed to you as soon as possible, usually within 2-3 working days.

For more details http://ucrel.lancs.ac.uk/wmatrix/