Mailster Cool Captchav1.4.0
Add a self-hosted image captcha to Mailster newsletter signup forms—block bot subscriptions without Google API keys.
Alternatives to SimplyCaptcha WordPress Plugin
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Mathlock Guardv2.0
Protects your site with a lightweight math CAPTCHA, requiring visitors to solve a simple question before accessing your content.
Lightweight, self-hosted captcha field for Fluent Forms — image, math and question/answer challenges. No external services, no tracking.
CaptchaCorev2.6.5
Bot protection without tracking, cookies or image puzzles. Proof of work and behavioural analysis, processed on servers in Germany.
Privacy-first, Proof of Work captcha for WordPress. No image puzzles, no tracking. 22+ integrations included.
PS PHPCaptcha WPv1.2.0
Simple PHP-GD based captcha to replace tracking prone systems like Google recaptcha
A lightweight plugin that protects core WordPress forms and selected third‑party plugins from spam and bot attacks using Cloudflare Turnstile CAPTCHA.
Image CAPTCHA, honeypot and accessibility spam blocking for Gravity Forms, CF7, WPForms, Formidable, Elementor, WooCommerce, comments, and login.
Kama SpamBlockv2.0.0
Light and invisible protection against basic automated comment spam. Pings and trackbacks check for real backlinks.
Protect your WordPress forms from spam and bots with a simple CAPTCHA — without complicated setup, external accounts, or API keys.