Monday 19 September 2011

php web development tools - captcha

Web development tool  CAPTCHA, stands for Completely Automated Public Turing to tell Computers and Humans Apart.

A CAPTCHA is a program that can generate distorted text  that humans can see or listen but computer cannot. 


Applications of CAPTCHA systems
-- Preventing Spam in Blogs.
-- Protecting Website Registration.
-- Search Engine Bots.
-- Worms and Spam.

In web application development we can use the following CAPTCHA systems that are listed below
reCAPTCHA - In this type of CAPTCHA systems user can view the distorted text or also listen the text, now a days it is most popular CAPTCHA systems for web developers

Securimage  : The Securimage Captcha script is free open-source. here the  PHP script is used to generat complex images and complex CAPTCHA alphanumeric codes.


FreeCap - This script support GPL CAPTCHA script systems to stop spam

4 comments:

  1. very informative informations for begineers thanks for providing so much useful informations


    image decoding

    ReplyDelete
  2. wow! the great blog.
    the tutorials for php can be easily understood and followed by beginners.
    thanks for sharing the info.
    keep blogging.

    captcha solver

    ReplyDelete
  3. wow!!!
    the great blog.the blog is very interesting and very informative.
    thanks for sharing the info.
    keep blogging.

    Kill Captcha

    ReplyDelete
  4. Hai, This is very informative Blog for this... Very superb for Captcha system Applications information... like this way...


    Decaptcha

    ReplyDelete

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