• Company Type For Profit
  • Contact Email info@recaptcha.net

reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows.

reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher. More specifically, each word that cannot be read correctly by OCR is placed on an

image and used as a CAPTCHA. This is possible because most OCR programs alert you when a word cannot be read correctly.

Lists Featuring This Company

Closed West Coast Software Companies
4,672 Number of Organizations • $34.4B Total Funding Amount • 8,586 Number of Investors
Closed United States Software Companies (Top 10K)
9,806 Number of Organizations • $70.4B Total Funding Amount • 15,626 Number of Investors
Acquired Mountain View Companies
494 Number of Organizations • $10.1B Total Funding Amount • 1,964 Number of Investors
Closed Mountain View Companies
622 Number of Organizations • $6.9B Total Funding Amount • 1,406 Number of Investors
reCAPTCHA was acquired by Google on Sep 16, 2009.

Frequently Asked Questions

Where is reCAPTCHA's headquarters? reCAPTCHA is located in Mountain View, California, United States.Who are reCAPTCHA's competitors? Alternatives and possible competitors to reCAPTCHA may include ConnectifyLastPass, and Gemnasium (acquired by Gitlab).