Wmatrix

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 functions. Wmatrix version 7 was released in March 2025, is completely freely available worldwide for academic users plus UK government and NHS email addresses. This is the largest revision of the software since it was created 25 years ago.

There's an explanation of the key differences (including much larger corpora & multilingual analysis in Wmatrix version 7) here: https://ucrel-wmatrix7.lancaster.ac.uk/

Find out all about Wmatrix here:  http://ucrel.lancs.ac.uk/wmatrix/