Tool which catches spelling errors as well as makes grammar and style suggestions. Also offers integration with a variety of text editors, as well as service plans.

A searchable text of William Strunk Jr's classic guide.

Describes the guide and provides examples of content plus information subscriptions.

Online tool for finding the differences in the texts of two documents or copied blocks of texts.

Advanced search engine focusing on phrases and words used in common expressions and idioms.

A celebration of punctuation held annually on September 24, with links to books and resources for proper punctuation, and signs displaying unintentionally humorous errors.

Guide to a wide range of American slang. With writer columns and resources.

Compilation of articles pertaining to speaking and writing, with quizzes and information on grammar and punctuation.

Analyzes text and provides information on the frequency of word usage, as well as a visual thesaurus. Offers a 14 day free trial.

• Subscribe

Guide to good web page of website development. Tackles issues in content, graphics, page layout, and site organization.

Online dictionary featuring English words from Latin and Greek origins.

Online tool for determining the frequency by which certain words are used in an article.

Discussions and insights on the different aspects of English language history, development, and quirks.