BotDetect ASP Classic CAPTCHA Generator

BotDetect™ prevents automated submissions of Classic ASP forms using CAPTCHA images. The BotDetect.Captcha COM component generates best-of-class Captcha images specifically designed to be out of reach of current computer vision and OCR technologies, while the wrapper ASP Captcha library manages user input validation and other web tasks.

The component also provides an audio Captcha alternative and keeps ASP websites accessible to the visually impaired people for whom reading the Captcha code could be a problem, thus enabling you to make WCAG and Section 508 compliant websites.

Why BotDetect ASP CAPTCHA?

BotDetect is unique among Captcha solutions in offering many Captcha image and sound styles. While each of them is easily comprehensible to human users, randomly using multiple Captcha generation algorithms makes the Captcha challenge practically impossible to pass automatically.

This approach to Captcha security is validated by the BotDetect track record: we have over 3000 paying customers and not one confirmed case of automated Captcha breaking by spammers.

Visual Studio 2013 & .NET 4.5.1 Supported

BotDetect ASP.NET CAPTCHA v3.0.15 includes support and samples for the latest Microsoft releases.

Full support for all Android & iOS devices

BotDetect ASP.NET CAPTCHA v3.0.13 audio now works on Android and iOS devices. Unlike other Captchas, sounds are played directly on the form page, without opening the media player app.

The BotDetect ASP CAPTCHA Component

This high-security Captcha protection can be added to your ASP forms with a single line (<!-- #include file="BotDetect.asp" -->), and fully customized and randomized by editing the BotDetect\CaptchaConfig.asp file. The control also comes with a number of ASP/VbScript code samples demonstrating how to integrate Captcha protection in various ASP usage scenarios, and how to use the many available Captcha features.

BotDetect ASP CAPTCHA Features

BotDetect ASP CAPTCHA Free Version

You can download BotDetect ASP CAPTCHA Component for free and use it immediately! Your ASP forms can be protected from spam (and bots in general) in minutes.

We offer basic email support for free to all BotDetect users. So if you need any assistance integrating BotDetect or have any questions or feedback, our Support department is at your disposal.

Once the BotDetect Captcha component has been integrated into your ASP website and you're satisfied with how it works, it's easy to upgrade your license if you need the extra features offered by commercial BotDetect versions.

BotDetect ASP CAPTCHA Free Download

BotDetect ASP Classic CAPTCHA System Requirements


Supported Operating Systems (x86 & x64):

  • Windows 2016 Server
  • Windows 10
  • Windows 2012 Server
  • Windows 8
  • Windows 2008 Server R2
  • Windows 7
  • Windows 2008 Server
  • Windows Vista
  • Windows 2003 Server
  • Windows XP
  • Windows 2000 Server
  • Windows 2000 Professional

Supported Internet Information Services:

  • IIS 10.0
  • IIS 8.0
  • IIS 7.5
  • IIS 7.0
  • IIS 6.0
  • IIS 5.1
  • IIS 5.0