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PHP Scripts arrow Anti Spam Scripts
Anti Spam Scripts
Anti Spam scripts that will protect your forms to be submited by spammer's bots. Captcha (an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart" ) is the most common and effective spam protection technique.
 
Captcha is a type of challenge-response test used in computing to determine whether or not the user is human or spammer's robot. A CAPTCHA involves one computer (a server) which asks a user to complete a test. While the computer is able to generate and grade the test, it is not able to solve the test on its own. Because computers are unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human.

Protect your forms from spammers with these free php spam protection scripts.
 


Listings
There are 18 listings in this category. Add your free script here
K CAPTCHA K CAPTCHA
KCAPTCHA is a free and open source PHP solution to generate human validation images (CAPTCHA).

KCAPTCHA is meant to be a very strong protected one but requires no special hosti ...

(Hits: 217 | Votes: 1 | Added: 2008-05-01 14:04:32)
PHP Class hn_captcha PHP Class hn_captcha
This php class generates a picture to use in forms that perform CAPTCHA test (Completely Automated Public Turing to tell Computers from Humans Apart). After the test form is submi ...
(Hits: 193 | Votes: 0 | Added: 2008-05-01 14:34:54)
Php Captcha Php Captcha

Visual and Audio PHP CAPTCHA Generation Class

PhpCaptcha is a library for generating visual and audio CAPTCHAs (completely automated public Turing test to tell computers and humans a ...

(Hits: 177 | Votes: 1 | Added: 2008-05-01 13:59:20)
reCAPTCHA reCAPTCHA
reCAPTCHA helps prevent automated abuse of your site (such as comment spam or bogus registrations) by using a CAPTCHA to ensure that only humans perform certain actions.
  • It ...

(Hits: 166 | Votes: 0 | Added: 2008-05-01 13:54:33)
BotProof Email BotProof Email
Hides the contact email address on a website from spambots. Users trying to contact you have to master a challenge, which can be one of:

    * click a small box in a larger image (examp ...
(Hits: 151 | Votes: 0 | Added: 2008-05-01 14:17:23)

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