The Santa Barbara Corpus of Spoken American English (SBCSAE)

• Size: 249,000 words
• Variety: American English
• Medium: Spoken English
• Genres: Naturally occurring mostly informal face-to-face conversations
• Sampling period: 1990s

The International Corpus of English (ICE)

• Size: 1 million words
• Variety: Parallel corpus series for over 20 varieties of English
• Medium: Spoken (600,000 words) and written English (400,000 words)
• Genres: Naturally occurring mostly informal face-to-face conversations
• Sampling period: 1991-present

The British National Corpus (BNC)

• Size: 100 million words
• Variety: British English
• Medium: 90% written and 10% spoken language
• Genres: Varied (with the same structure for every variety)
• Sampling period: 1970s - 1993

The Vienna-Oxford International Corpus of English (VOICE)

• Size: 1 million words
• Variety: English spoken as a lingua franca by speakers of more than 50 L1s
• Medium: Spoken English
• Genres: Naturally occurring, non-scripted face-to-face interactions
• Sampling period: 2001-2007

The Corpus of Contemporary American English (COCA)

• Size: 400 million words
• Variety: American English
• Medium: Written English
• Genres: Evenly balanced by genre (fiction, magazine, newspaper, other non-fiction)
• Sampling period: 1810-2009

The Corpus of Historical American English (COHA)

• Size: 560 million words (still growing)
• Variety: American English
• Medium: Written and spoken English
• Genres: Evenly balanced by genre (spoken, fiction, popular magazines, newspapers, and academic texts)
• Sampling period: 1990-2017

The TIME Magazine Corpus

• Size: More than 100 million words
• Variety: American English
• Medium: Written English
• Genres: Articles from the Time Magazine
• Sampling period: 1923-2006

The Michigan Corpus of Academic Spoken English (MICASE)

• Size: 1.8 million words
• Variety: American English
• Medium: Spoken English
• Genres: Academic English (Lectures, seminars, councelling sessions, etc.)
• Sampling period: 1997-2001