Linguistics

Includes 100 million words, from the 1980s through 1993

Includes more than 400 million words of text of American English, covering two centuries. Allows researchers to measure how words, phrases, and grammatical constructions have increased or decreased in frequency; and how words have changed meanings.

Includes more than 450 million words, drawn from spoken language and fictional, popular, and academic texts. Allows searching for exact words and phrases, wildcards, lemmas, parts of speech.

Contains 1.9 billion words, from 1.8 millions web pages, from 20 English-speaking countries.

Drawn from Google texts, but created by Professor Mark Davies of BYU. Access to 155 billion American, 34 billion British English, and 45 billion Spanish words.

Includes corpora and data sources. An English language interface is available.

Includes a range of corpora of spoken and written Chinese, specifically designed for grammatical and lexical studies of Mandarin, as well as contrastive and translation studies of Chinese and English. The English language interface might make this easier for some scholars.

Resources on written and spoken Italian.

A corpus of contemporary Italian texts harvested from the web. Main focus is language learning, but also supports research.

More than 100 million words in 20,000 texts from the 13th through 20th Centuries.

Contains 540 million words, lemmatized and tagged with detailed part of speech information. Derived from several sources, including documents from the UN and European Parliament

Derived from a wide variety of spoken and written texts, from all Spanish speaking countries, primarily covering the period 1975-2004

Drawn from Google texts, but created by Professor Mark Davies of BYU. Access to 155 billion American, 34 billion British English, and 45 billion Spanish words.

Described as a balanced and representative corpus of 50 million words, from a variety of texts from 1990-2009.