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reCAPTCHA

1
reCAPTCHA is a free service that helps to digitize books, newspapers and old time radio shows while preventing automatic form filling by robots.
Captcha online services comparison
Name
reCAPTCHA
Screenshot
Distinctive featuresThe service helps to digitize books or audio shows
Multi-language English, German, French, Dutch... (8 languages + custom)
Visual customization 4 themes + custom
Audio captcha
Code samplePHP, ASP, Java/JSP, Perl...
Wordpress plugin
Compatible SSL
Notable web site using it
Prezzi
Free plan
Prezzo
Additional
Sito webrecaptcha.net
Twitter
Webmaster
English
Public
Public
2012-08-07 23:09:28
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