CAPTCHA Usage Distribution in the Top 1 Million Sites

Top In CAPTCHA Usage Distribution in the Top 1 Million Sites

Technology	Websites	%
reCAPTCHA	116,868	11.69
Are You a Human	5,995	0.6
SI CAPTCHA	1,508	0.15
Math Captcha	709	0.07
WP reCAPTCHA	204	0.02
Human Presence	143	0.01
Tencent Waterproof Wall	88	0.01
GEETEST	64	0.01
SnapHost	25	0
Sweet Captcha	19	0
KeyCAPTCHA	19	0
Hashcash	5	0
Picatcha	1	0
EasyCaptchas.com	1	0

147,728 Detections

of CAPTCHA in the Top 1 Million Sites.

reCAPTCHA is currently the most popular technology in this category.