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Tue Sep 26 04:36:27 2017

Information about: captcha.net
Popularity/access rank: Site number 7503 (.net extension); 131573 (global rank)
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Captcha information:

TitleThe Official CAPTCHA Site (view sites with similar title)
Category: Computers / Artificial Intelligence / Applications
Computers / Internet / Abuse / CAPTCHA
Description CAPTCHA: Telling Humans and Computers Apart Automatically A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. For example, humans can read distorted text...
Address http://www.captcha.net Add this site to your favorite list

Captcha - Site Review: The CAPTCHA Project - Completely Automated Public Turing Test to Tell Computers and Humans Apart. Includes demonstrations, research papers, and news. CAPTCHA: Telling Humans and Computers Apart Automatically - Includes demonstrations, research papers, and news.


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Captcha Summary

The Official CAPTCHA Site. CAPTCHA: Telling Humans and Computers Apart Automatically.A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but.
current computer programs cannot. For example, humans can read distorted text as the one shown below, but current computer programs can't:
The term CAPTCHA (for Completely Automated Public Turing Test To Tell Computers and Humans Apart) was.
coined in 2000 by Luis von Ahn, Manuel Blum, Nicholas Hopper and John Langford of Carnegie Mellon University.
Get a Free CAPTCHA For.Your Site.A free, secure and accessible CAPTCHA implementation is available from the reCAPTCHA project . Easy to install plugins and controls are.
available for WordPress , MediaWiki , PHP , ASP.NET , Perl, Python, Java, and many other.environments. reCAPTCHA also comes with an audio test to ensure that blind users can freely navigate your site. reCAPTCHA is our officially recommended.
CAPTCHA implementation. Test Drive a CAPTCHA. ...



Popularity Rank of captcha.net
Alexa Rank Alexa Rank Date
131573 2013-05-15
125181 2013-05-01
110199 2013-04-15
100595 2013-04-01
113624 2013-03-15
119037 2013-03-01
127907 2013-02-15
136044 2013-01-30
131218 2013-01-08
107974 2012-11-17
101273 2011-12-06
91474 2011-08-13
91446 2010-06-10
85826 2010-03-07
89665 2009-05-28
90177 2008-12-23

Access traffic rank of captcha.net (site position)

Server IP of captcha.net: 128.2.172.173 (hosted by Carnegie Mellon University)
Domain extension: .net (list top sites in .net (Networks))

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2 images found on captcha.net:


Sites linking from it's first page to captcha.net: (2 results found)

Links found on Captcha homepage:

External links:

captcha.net is linking to those sites:

  1. Get a Free CAPTCHA For Your Site
  2. WordPress
  3. MediaWiki
  4. PHP
  5. ASP.NET
  6. SQUIGL-PIX
  7. ESP-PIX
  8. New: Learn Spanish, German or French for free while translating the Web!
  9. reCAPTCHA MailHide
  10. reCAPTCHA
  11. reCAPTCHA: Human-Based Character Recognition via Web Security Measures.
  12. Breaking Audio CAPTCHAs
  13. Telling Humans and Computers Apart Automatically
  14. CAPTCHA: Using Hard AI Problems for Security
  15. Using Machine Learning to Break Human Interaction Proofs (HIPs)
  16. Recognizing Objects in Adversarial Clutter: Breaking a Visual CAPTCHA.
  17. Google Tech Talk about CAPTCHAs and Human Computation
  18. Human or Computer? Take This Test
  19. reCAPTCHA - Stop Spam, Read Books
  20. For Certain Tasks, the Cortex Still Beats the CPU



site visit date: 2013-02-22 20:41:21
captcha.net site information


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