Dictionaries
- American-Heritage Collegiate DictionaryOne of the best
- Century Unabridged Dictionary (1889)Old but still useful, especially for historical interests
- Cambridge Dictionaries OnlineFree Online English Dictionaries from Cambridge University Press.
- Historical Dictionary of American SlangalphaDictionary's own slang dictionary that allows you to search for the years of slang terms and slang variations of the same meanings.
- Merriam-Webster Collegiate DictionaryOne of the best.
- New World College DictionaryThe only source of this distinguished US English dictionary.
- Oxford English Dictionary (Subscription or Purchase Only)
- Wordnik English DictionaryAmerican Heritage and Century dictionaries expanded in an attempt at the most complete and useful modern English dictionary.
- Chambers (British) English Dictionary Distinguished British dictionary, thesaurus, and biographical dictionary.
- Dictionarium Britannicum A More Compleat Universal Etymological English Dictionary than Any Extant
- Dictionary.com American Heritage, Wordnet, 1913 Merriam-Websters and others.
- Encarta The Microsoft dictionary with very short and simple definitions.
- Get-Definition Dictionary WordNet dictionary with each word linked to a translation into about 30 other languages.
- Illustrated Semantically Organized Glossary Large glossary of English words in semantic categories for foreigners studying English.
- Learning English Online English and German versions of basic English grammar. Complete but not very deep
- Modern English-Indo-European Dictionary
- Newbury House Online Dictionary
- The Macquarie Dictionary (Australian—requires subscription)
- Wordnet English Dictionary and Thesaurus
- Wordsmyth
Specialty Dictionaries
- The Phrase FinderThe origins of phrases and sayings, mondegreens, urban myths, Shakespearean quotes. Excellent.
- English Specialty Dictionaries (125 categories)125 categories of specialty vocabulary on the Web
- Baby-Talk Dictionary A dictionary of mispronunciations from our children.
- Bartlett's Dictionary of Americanisms Dictionary of Americanisms by John Russell Bartlett (1848).
- Dictionary of Idioms The Phrase Finder is a collection of abou 1200 English idioms with wordy and not always enlightening discussions.
- Dictionary of Newfoundland English Online
- Dictionary of the Vulgar Tongue (1811) A dictionary of the slang of the British underworld produced in 1811.
- GoEnglish.com Idiom Dictionary
- Grandiloquent Dictionary Obscure and rare English words
- Middle English Dictionary Based on the Middle English Dictionary of 2001, 15,000 pages covering English 1100-1500
- Piggot's Political Dictionary (1795) A humorous treatment of political terms. A-F done as of this writing.
- Rhyming Dictionary and Thesaurus A rhyming dictionary, thesaurus, and spelling checker, plus a search engine for Shakespeare's works.
- Scots English Dictionary The Dictionary of the Older Scottish Tongue and the 10-volume Scottish National Dictionary combined in a searchable on-line dictionary.
Grammars
- Directory of English GrammarPretty much everything on the Web dealing with English grammar.
- A Brief Grammatical Sketch of English
- Advanced English Lessons Englishpage.com offers free English lessons and exercises online. The premier internet resource for intermediate and advanced learners of English as a foreign language.
- Beginning English for Somali Speakers English pronunciation and grammar(with selected vocabulary) are explained in English and Somali.
- English Club English Grammar A very good free online grammar for English learners.
- English Online from New Zealand Ministry of Education Fully resourced English Units for years 1-13.
- Eva Easton's Basic English Grammar An excellent reliable site written by an expert.
- Online English Grammar Very nice grammar covering major points in simple-to-browse HTML format.
- Phonetics Flash Animation Project Every sound in English described, pronounced, and illustrated in a Flash animation.
- The Internet Grammar of English
Language Resources
- English Language Resources (Powell's Bookstore)English language resources: dictionaries, grammars, readers, and the like.
- Columbia Encyclopedia On Line Slider.com Encyclopeadia: Encyclopeadia
- English Newspapers Online English Newspaper Websites
- English Radio Stations Online English Radio Station Websites
