Lanap BotDetect ASP.NET CAPTCHA
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... 'Developer Edition' includes FULL SOURCE CODE and ROYALTY FREE distribution rights!
http://www.lanapsoft.com/products/...oad/lanapbotdetectaspnettrial.zip - 934Kb - Download - Screenshot