One of John Milton's tools - a WORD macro toolbar with neat goodies to help students when writing, including lots of dynamic links to concordances, grammar pages, dictionaries, a thesaurus, etc.
A superb resource. The entire British National Corpus and the Corpus of Contemporary American English are freely available. After about 5 searches, you are asked to register. It also has the complete TIME magazine archives, plus the Oxford English Dict
"Concordle has one point common with Wordle: it makes word clouds. But these are only text, and in a browser in general the choice of fonts is limited, so the clouds are not so very pretty. But it is much more clever: All the words in the cloud are clickable, i.e. they have links to concordancer function. "
Min -- can't remember if I shared this with you before. A qurkiy little tool that might be useful in terms of training. See 'wikisheet' at http://kristinaweb20.pbworks.com/activity+-+introduction+to+ddl for an 'introduction to data-driven learning' with a Concordle task.