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Whats the best free CAPTCHA form?

Discussion in 'Security' started by east2west, Jun 26, 2007.

  1. #1
    My site has come under spam attack so I need to install a CAPTCHA form, I was wondering if anyone knew of a good free one?
    SEMrush
     
    east2west, Jun 26, 2007 IP
    SEMrush
  2. clickbuild

    clickbuild Member

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    #2
    I'm using hn_captcha on a couple of sites - fairly easy to install and has an nice readable output

    Steve
     
    clickbuild, Jun 26, 2007 IP
    east2west likes this.
  3. east2west

    east2west Peon

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    #3
    Thanks Steve, do you have a link?
     
    east2west, Jun 26, 2007 IP
  4. freeprotect

    freeprotect Peon

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    #4
    I think you can use any capcha, because all capcha version only detect human or robot. It antis flood by attacker (robot)
     
    freeprotect, Jul 1, 2007 IP
  5. sslshopper

    sslshopper Member

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    #5
    Captcha ZDR has worked pretty well for me so far: http://www.webtoolbag.com/captcha-zdr-powerfull-captcha-tool--r70.htm

    All captcha scripts aren't equal. Many of them have been broken: http://sam.zoy.org/pwntcha/
     
    sslshopper, Jul 2, 2007 IP
  6. craigedmonds

    craigedmonds Notable Member

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  7. ErectADirectory

    ErectADirectory Guest

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    #7
    Animated Gif Captcha was born right here at DP just a few months ago. Feel free to use it as you wish as I released it under the lgpl.
     
    ErectADirectory, Aug 16, 2007 IP
  8. King Dragon

    King Dragon Peon

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    #8
    I like Animated Gif Captcha. I download it and trying on my contact form.
    Thanks for your sharing.
     
    King Dragon, Sep 19, 2008 IP
  9. amitagrawal0001

    amitagrawal0001 Peon

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    #9
    Hi,
    You can also check it out
    http://www.cisin.com/Image_Verification_Code_and_Script.htm

    Nothing to download or install, Easy to use and after login will provide you detailed instructions to use it. Can be used on any web page static or dynamic, any language. Also it has more then 1500,000 impressions :cool:. Seems a good one. check it out!
     
    amitagrawal0001, Nov 19, 2008 IP
  10. gemini181

    gemini181 Well-Known Member

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    #10
    I've noticed "Re-Captcha" is easy for end-users.
    Does anyone know if it is also good at stopping bots?
     
    gemini181, Nov 25, 2008 IP
  11. lvtim

    lvtim Well-Known Member

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    #11
    Not sure about that, but so far from my experience I've been very happy with reCAPTCHA and use it in all my sites. They are very easy to install for my comments, contact forms and so on.
     
    lvtim, Nov 25, 2008 IP
    gemini181 likes this.
  12. gemini181

    gemini181 Well-Known Member

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    #12
    This is a general question about all solutions, not specifically about "Re-Captcha"
    ``

    I have at least one useful (little known) Open-source software in which part of the Captcha related code (the actual 'form') needs to go in a template file.

    The 'dynamic code' (which reads the result) needs to go in register.php (for example)
    I've tried for many hours to get that to work (based on 'example.php' files) and I'm not yet able.

    > In general, would you (or anyone else) consider this a basic, medium, or advamced PHP topic?
     
    gemini181, Nov 25, 2008 IP
  13. Blazestar

    Blazestar Peon

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    #13
    Hi, dear, forget this captcha from webwizguide... I have placed it in my guestbook and got 380 PAGES of trash placed by robots using it... that´s why I am looking for another one. :(
     
    Blazestar, Mar 11, 2009 IP
  14. AaliyahRoma

    AaliyahRoma Peon

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    #14
    Maybe this -all in one file- php form with captcha helps you. There is also a demo on that page before you use it. Url: cafewebmaster.com/node/178
     
    AaliyahRoma, May 10, 2009 IP
  15. starfall87

    starfall87 Peon

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    #15
    I am a fan of Mollom if you do not need more than 100 solved per day. You might consider putting Mollom on your text boxes (comments, posts, etc) and recaptcha on your signup and password recovery boxes?
     
    starfall87, May 13, 2009 IP
  16. laszlograd

    laszlograd Peon

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    #16
    HelloCaptcha provides free animated CAPTCHAs. The embedding code is simple.
     
    laszlograd, Feb 24, 2011 IP
  17. captchaPlus

    captchaPlus Peon

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    #17
    Try captchaplus.com

    It's 100% free and has copy & paste installation
     
    captchaPlus, Oct 19, 2011 IP
  18. kristina lacu

    kristina lacu Peon

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    #18
    Hi. Guess what? Ticketmaster has decided to stop using the Captcha program used by many internet retailers. Instead, it will go with New York start-up Solve Media's advertising-based system that deals with more natural speech. Ticketmaster, our planet's largest online ticket retailer, has grown wise. Rather than continuing to bother users by requiring them to enter nearly illegible nonsense terms in order to prove they're human rather than a spamming robot. I think it would be much easier. :)
     
    kristina lacu, Mar 3, 2013 IP
  19. Sarah Needham

    Sarah Needham Peon

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    #19
    I like this one: http://confidentcaptcha.com. Visitors just click on a few pictures to solve it, so it's much easier than those distorted word captchas. Also, you have the option of earning $$ with advertising in the captcha.
     
    Sarah Needham, Jun 5, 2013 IP
  20. robinton

    robinton Member

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    #20
    i like just this :D http://www.google.com/recaptcha/captcha
    enter your site name and get public and private key for your website an then using it in any place of your script
     
    robinton, Jun 20, 2013 IP