Best captcha software for free download

Lanapsoft BotDetect - ASP CAPTCHA is a website security solution (component) designed to protect your registration, comment, poll, guestbook, content submission, and other online forms from automated spam submissions. It generates CAPTCHA images with textual code rendered in them that are easily decipherable to humans -- but not to spam bots.
In essence, it allows you to focus on your code or content -- instead of on deleting spam.

'Developer Edition' includes FULL SOURCE CODE and ROYALTY FREE distribution rights!

Key features:
- time unlimited and fully functional demo version (it displays "Lanap" 50% of times),
- built-in sound support that allows access even to visually impaired people,
- 50 different CAPTCHA algorithms,
- custom size and image format,
- full server side component,
- not dependent on other software so it does not bring in any additional dependencies,
- includes high-quality samples,
- free 24x7 support.

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This is the ultimate MySpace tool to help promote your band, market your product and services, or even run for office. Easy Adder automates the daunting task of adding friends, sending messages, leaving comments or posting bulletins. The tool is very intuitive so you can start unlocking the MySpace marketing potential right away. Some of it's features include: CAPTCHA alert, the ability to extract profiles or perform searches based on looks and lifestyle, or band profiles. Download the free demo and try it today.

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ZZEE Human Pictcha is a protection in a form of an image (a captcha), which can be embedded inside your web forms, and which will filter out various forum spam, guestbook spam, form spam, signup spam, password attacks, etc. It is a library and a set of tools and examples for PHP and can be used with Perl as well.
Human Pictcha is fairly easy to install and embed into your existing PHP or Perl forms. You can download a free demo version to see if it is compatible with your web site and how easy to use it in your forms. Human Pictcha comes with the full open source, which is a big advantage.
- For PHP or Perl forms
- Easy to setup and maintain
- Full open source
- Compatible with the typical webserver setup
- Secure and hard to defeat by OCR
- You can tune it to match your website looks
- Complete documentation
- Image code can consist of digits and letters or only digits, making it easy to adapt to international markets
- You can significantly adjust the level of protection by enabling or disabling security features and changing various parameters
- Trial download available
- Online demo available

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Lanap BotDetect ASP.NET CAPTCHA is a website security solution designed to prevent automated registrations (spambot) with CAPTCHA image. While the code cannot be read by machine (computer program), it is easily read by a human.

Key features: generates CAPTCHA image with textual code rendered in it, customizable, many different algorithms, custom size and image format, full server side component, not dependent on other software and it can be royalty free distributed. 'Developer Edition' includes FULL SOURCE CODE and ROYALTY FREE distribution rights!

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Lanap BotDetect for ASP is a website security solution designed to prevent automated registrations with CAPTCHA image. While the code cannot be read by machine (computer program), it is easily read by a human.

Key features: generates CAPTCHA image with textual code rendered in it, fully customizable, many different algorithms, custom size and image format, full server side component, not dependent on other software, includes high-quality samples, free 24x7 support.
'Developer Edition' includes FULL SOURCE CODE and ROYALTY FREE distribution rights!

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