Lanapsoft BotDetect ASP CAPTCHA, you will get no better tool to protect your online registration forms from spammers and auto submissions.
    Mechanically automated online spam submissions to your website can cause a pain in your neck. But now you can keep these spammers at bay by getting this tool that allows you to protect you online registration forms and other submission forms with CAPTCHA images. These CAPTCHA images in disguised textual code cannot be read by machines they can on be read by humans. Henceforth spammers get restricted to make un-necessary submissions. The features included in the tool are; it supports 50 different CAPTCHA algorithms, the code length and image size of the CAPTHA is customizable, supports alpha, numeric and alpha numeric codes, supports jpeg, gif, png and bmp image formats, and other features making the tool an awarded website security solution.
    This simple yet powerful tool also supports the Medium trust environment for .NET version.