FlexCaptcha is a freeware Captcha asp.net control that support many custom settings for protecting forms, comment tracks and forums against automated spam. The most significant property is that FlexCaptcha can write captcha images to either disk or directly to http stream bypassing disk writing all toghether.
FlexCaptcha is possibly the only asp.net captcha control that allows an asp.net programmer to choose whether captcha images are written to disk or directly to http stream - this makes FlexCaptcha usable in a broader context : In default mode the control works out-of-the-box and can even be embedded into other controls without the programmer need to configure anything. However the programmer can setup an http handler in web.config to gain the speed of direct http stream writing bypassing disk IO.
FlexCaptcha can be used by asp.net programmers to protect their forms, comment tracks and forums against automated spam.
Download FlexCaptcha 1.1 in