- Clear and concise explanation of the difference between correct and incorrect usage in American English spelling, grammar and idiom, with entertaining examples.
Alan Cooper's Homonyms: - Extensive list of homonyms/homophones in American English from various sources, along with links.
Alt.Usage.English FAQ: - Newsgroup discussing English usage, maintained by Mark Israel.
The American Dialect Homepage: - Resource for both linguistic and literary scholars about regional varieties of English in the United States and Canada. Includes maps, annotated link directory, and dialectology bibliography.
The American Language by H.L. Mencken: - Online publication of the full text of a classic book on the history and nature of American English, with particular attention paid to the discrepancies between British and American English.
English Contrasted: - Native and non-native English-language accents are demonstrated from around the world, through the use of downloadable sound files.
International Dialects of English Archive: - Collection of freely downloadable recordings of real people speaking English in their own native accents and dialects. Nearly 300 4-minute MP3 samples available.
Language Sites on the Internet: - Word mavens may browse etymology, dictionary, thesaurus links, links to anagrams, oxymorons,palindromes, puns, idioms, banished words and expressions, city-by-city slanguage, mondegreens, logophilia, heteronyms, chiasmus, common punctuation errors.
List of Banished Words: - Annual list published by Lake Superior State University of words that should be banished from the English language for misuse, overuse, and just general uselessness.
Loosely Speaking: - Requests that the reader take a quick, 5-question survey to determine usage in various geographical locations.
Survey of English Usage: - University College (London) researchers focusing on grammar and linguistics, plus world-wide usage. Includes the "Internet Grammar of English".
Varieties of English: - Linguistic analysis (phonology, morphology, syntax, vocabulary) of different varieties of English spoken in the US, Canada and Britain.
The Vocabula Review: - A free, monthly journal about the state of the English language, dedicated to supporting its clear and expressive usage.
WordNet: - A lexical database and reference system for the English language from Princeton University.
World Wide Words: - More than 1400 pages which explore the history, evolution, byways, quirks, and curiosities of the English language. A weekly newsletter is sent by e-mail and RSS.
The Xtag Project: - Lexicalized Tree Adjoining Grammar (TAG) project, a geometric method for analysing English grammar.