| CAPTCHA: Telling Humans and Computers Apart Automatically |
| The Official CAPTCHA Site |
| http://www.captcha.net/ |
| Includes demonstrations, research papers, and news. |
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captcha.net - rank der domain 105038 (40256 in US)
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| Wikipedia: CAPTCHA |
| CAPTCHA - Wikipedia, the free encyclopedia |
| http://en.wikipedia.org/wiki/CAPTCHA |
| Explains how captcha features can keep spammers from signing up for certain accounts online, such as email or weblogs. Explains how the system can be circumvented as well. |
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| captcha, captchas, retrieved, images, computers, wikipedia, microsoft, recognition, difficult, attac ker, software, automated, security, asirra, segmentation, research, captcha, turing, captcha, comput er, article, computer, wikipedia, visual, humans, ticketmaster, google, security, research, services , letters, university, vector, character, solution, implementation, simplesearch, unable, solvers, r ecaptcha, accessible, database, because, changes, breaking, example, challenge, questions, unsourced , creating, people |
wikipedia.org - rank der domain 6 (5 in US)
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| JCaptcha |
| JCaptcha - |
| http://jcaptcha.sourceforge.net/ |
| An open source Java framework for captcha definition and site integration. Project information, docu mentation, issue tracker, and download. |
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| project, jcaptcha, pagetracker, documentation, extension, import, simpleimagecaptchaservlet, samples , source, document, gajshost, overview, reports, information, jcaptcha, public, automated, completel y, stands, simple, buffered, jbosscache, testing, engine, integration, freetts, servlet, simplelists oundcaptchaenginecaptcha, simplelistsoundcaptchaengine, samples, reference, started, simplelistimage captchaenginecaptcha, integration, humans, computers, definition, captcha, framework, initdata, 3856 069, gettracker, trackpageview, published, unescape, analytics, google, script, 3cscript, javascript , version |
sourceforge.net - rank der domain 154 (74 in US)
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| Computers/Internet/Abuse/CAPTCHA |
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| reCAPTCHA |
| reCAPTCHA: Stop Spam, Read Books |
| http://recaptcha.net/ |
| A captcha system that uses successful decodings to helps digitise books for online use. Background, and details on how to incorporate into a site. Source code in several languages, and plugins for pop ular blogging and CMS software. |
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| recaptcha, account, protect, reserved, resources, rights, google, urchintracker, 372036, plugins, ac curate, privacy, contact, digitizing, content, google |
recaptcha.net - rank der domain 54462 (20693 in US)
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| Captcha Creator |
| Captcha code creator - PHP captcha script package |
| http://www.captchacreator.com/ |
| PHP Captcha Script that generates unique captcha images to stop automated submissions, highly custom izable, easy to install and configure. |
| Professional PHP Captcha Script that generates unique captcha images to stop automated submissions, highly customizable, easy to install and configure. |
| captcha creator, php captcha, captcha script |
| captcha, captcha, script, letters, numbers, creator, install, difficult, refresh, displayed, customi ze, strong, create, scripts, captcha, customizable, script, backgrounds, contact, configure, images, hosting, submit, generates, number, special, submissions, computers, creator, collection, common, d istorted, website, captchas, websites, probably, classic, generate, popular, depends, detect, includ ing, distinguish, noised, written, languages, variation, letter, rotating, overlapping, better |
captchacreator.com - rank der domain 328904 (9443 in GB)
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| Inaccessibility of CAPTCHA |
| Inaccessibility of CAPTCHA |
| http://www.w3.org/TR/turingtest/ |
| A W3C Working Group Note explaining how CAPTCHAs can present a major obstacle to users who have limi ted vision or a learning disability such as dyslexia. This document examines a number of potential s olutions and alternative systems. |
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w3.org - rank der domain 389 (180 in US)
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| Securimage |
| Securimage CAPTCHA - Free PHP Captcha Script |
| http://www.phpcaptcha.org/ |
| Open source PHP script for generating image CAPTCHAs with audio alternatives. Includes documentation , a gallery and an online demonstration. [LGPL] |
| Securimage is an open-source free PHP CAPTCHA script for generating complex images and CAPTCHA codes to protect forms from spam and abuse. |
| securimage,php captcha,free captcha |
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phpcaptcha.org - rank der domain 92289 (3486 in IN)
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| 3DCaptcha |
| 3DCaptcha |
| http://www-personal.umich.edu/%7emressl/3dcaptcha/ |
| Open source system that uses spatial cognition abilities of humans to differentiate them from machin es. |
| 3DCaptcha - a captcha nice to humans, bad to machines |
| 3dcaptcha,captcha,markov,profane,foul,language,model,chain,spatial,cognition,differentiate,php,truet ype,font |
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umich.edu - rank der domain 3687 (1381 in US)
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| Computers/Internet/Abuse/CAPTCHA |
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| TheCAPTCHA |
| TheCAPTCHA - a powerful php script to protect your site against spambots. Free and open-source. Easy to install |
| http://www.thecaptcha.com/ |
| Offers a free and open source PHP script to reduce spam, also contains a detailed article about CAPT CHAs. |
| TheCAPTCHA - a powerful php script to protect your site against spambots. Free and open-source. Easy to install |
| captcha, protect, image, spam, spambot, forum, blog, php, open-source, ttf, gd |
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| (SLD : thecaptcha.com) |
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| What’s Up CAPTCHA? A CAPTCHA Based On Image Orientation |
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| http://www.richgossweiler.com/projects/rotcaptcha/rotcaptcha.pdf |
| Paper by Rich Gossweiler, Maryam Kamvar, and Shumeet Baluja describing an investigation into a new t ype of CAPTCHA based on asking users to say which way up an image should be. |
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