A self-hosted, customizable, easy-to-implement and user-friendly captcha for PHP.

A simple PHP CAPTCHA library

It is a simple PHP script to generate captcha for form validation. It can be integrated in any website for captcha generation.

PHP library for ArCaptcha

bestcaptchasolver-php is a super easy to use bypass captcha php API wrapper for bestcaptchasolver.com captcha service

A library implemented by PHP to generate captcha easily.

PHP Library for reCAPTCHA Google's API

Nice Captcha with good quality and security for keeping safe from bots using PHP.

Final exam project for internet based information systems course.

Automatic generation of captcha and compares with user entered text