CAPTCHA Usage

Statistics for websites using CAPTCHA technologies

reCAPTCHA
Are You a Human
SI CAPTCHA
WP reCAPTCHA
Sweet Captcha
KeyCAPTCHA
Picatcha
Hashcash
GEETEST
NuCaptcha

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Name 10k 100k Million Entire Web
reCAPTCHA 1,071 7,158 44,898 1,960,435
Are You a Human 34 364 2,851 103
SI CAPTCHA 9 188 1,841 115,139
WP reCAPTCHA 4 53 363 11,054
Sweet Captcha 2 6 63 2,827
NuCaptcha 0 0 0 0
KeyCAPTCHA 0 2 11 64
Keypic 0 0 0 2
Picatcha 0 1 6 24
Hashcash 0 1 4 119

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