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, many different algorithms, custom size, server side component. 'Developer Edition' includes SOURCE CODE and ROYALTY FREE distribution rights!
Free download