Simple question-based form field alternative to CAPTCHA.
HTML Contact Form with PHP script for email and SMS alerts
Contact form with SENDGRID email notification and PROOVL SMS alert
A small, simple PHP MVC framework skeleton that encapsulates a lot of
Simple, single-file captcha library for both PHP and JSON / AJAX.
Contacto form by SMTP server with captcha
A simple PHP-AJAX captcha application
an extremely buggy web app !
Contacto form by SMTP server with captcha
Free template based a CSS grid system, responsive
ASP or PHP Captcha, completly configurable, with prevalidation
Highly customizable Anti-spam bot
Secure X W22 is a Web Security Architecture Solution
A simple and lightweight contact form written in PHP
Captcha source code with Javascript and PHP.
A jQuery augmented PHP library for creating and validating HTML forms