This site keeps links to two online tools, both based on BNC data, both developed by external members and both with their own sites too:
Scáthach is an online sampler developed by Alicia Lara-Clares. It can collect corpus samples at various intervals, of various word-classes and subject to various formal constraints (e.g. with the prefix en- or with the suffix -able). Scáthach can be used for corpus searches at the designer's site as for general use (Scáthach), or here as used for this project.
Lexfreq is an online tool developed by Tuğrul Ertürk to establish semantic relationships between words.
Last updated 01/12/18