Here is a list of the top 10 popular free PHP Captcha scripts:
Securimage Securimage is a powerful and versatile PHP Captcha script that is easy to use and configure. It offers a variety of features, such as the ability to generate different types of Captchas, support for multiple languages, and resistance to brute-force attacks.
Opens in a new windowwww.bypeople.com
Securimage PHP Captcha script
Simple PHP Captcha Simple PHP Captcha is a lightweight and easy-to-use PHP Captcha script. It is perfect for websites that need a simple and effective way to prevent spam.
Opens in a new windowwww.allphptricks.com
Simple PHP Captcha script
Captcha.com PHP Captcha Library The Captcha.com PHP Captcha Library is a powerful and flexible PHP Captcha library that can be used to generate a variety of Captchas, including image Captchas, text Captchas, and audio Captchas.
Opens in a new windowwww.codexworld.com
Captcha.com PHP Captcha Library script
reCAPTCHA reCAPTCHA is a popular Google-developed Captcha service that uses advanced machine learning techniques to distinguish between humans and bots. It is available as a free PHP library.
Opens in a new windowwww.codexworld.com
reCAPTCHA PHP Captcha script
hCaptcha hCaptcha is another popular Captcha service that uses AI to distinguish between humans and bots. It is also available as a free PHP library.
Opens in a new windowwww.discussdesk.com
hCaptcha PHP Captcha script
BotDetect Captcha BotDetect Captcha is a powerful and versatile PHP Captcha library that offers a variety of features, such as the ability to generate different types of Captchas, support for multiple languages, and resistance to brute-force attacks.
Opens in a new windowcaptcha.com
BotDetect Captcha PHP Captcha script
GD Captcha GD Captcha is a simple and lightweight PHP Captcha script that uses the PHP GD library to generate image Captchas.
GD Captcha PHP Captcha script
ImageCaptcha ImageCaptcha is a simple and easy-to-use PHP Captcha script that generates image Captchas with a variety of options, such as font size, font color, and background color.
Opens in a new windowwww.phpzag.com
ImageCaptcha PHP Captcha script
CaptchaPHP CaptchaPHP is a simple and lightweight PHP Captcha script that generates image Captchas with a variety of options, such as font size, font color, and background color.
Opens in a new windowwebdamn.com
CaptchaPHP PHP Captcha script
Easy Captcha Easy Captcha is a simple and easy-to-use PHP Captcha script that generates image Captchas with a variety of options, such as font size, font color, and background color.
Opens in a new windowwww.askapache.com
Easy Captcha PHP Captcha script
These are just a few of the many free PHP Captcha scripts available. When choosing a script, it is important to consider your specific needs, such as the type of website you are using and the features you require.
