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Power Captcha reCAPTCHA

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Captcha.eu

Prosopo Procaptcha

ALTCHA Spam Protection

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Advanced Google reCAPTCHA

Admintosh – WordPress admin customization and security tools

Contact Form 7 Image CAPTCHA, WPForms Image CAPTCHA, Contact Form 7 Spam Image CAPTCHA, WPForms Spam Image CAPTCHA, GDPR

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hCaptcha for WP

CreataCaptcha

Friendly Captcha for WordPress

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Captcha by BestWebSoft – Spam Protection, Security Plugin for WordPress Forms

Captcha Spam Blocker

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CaptchaFox for WordPress

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spam-stopper

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Security, Antivirus, Firewall – S.A.F

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QuizMe

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PS PHPCaptcha WP

pRove yoU are a Human! (RUH) image based Captcha plugin

Protect Ai Login

PollMe

Pipe Recaptcha – Spam Protection, Security Plugin for WordPress Forms

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MTCaptcha WordPress Plugin

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Logy – The New Era Of Login / Registration With Social Login & Limit Login Attempts & Captcha

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Ironclad CAPTCHA WP plugin

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I am Human

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Contact Form Builder For WordPress : #1 Free Contact Us Form Builder By Core37

Contact Manager

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CheckBot

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BotBlocker

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Any Contact

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Amcaptcha

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Adaptive Login Action

2BC Form Security