ridhwanahsann

RMGCaptcha Math Guard adds a GDPR-friendly, math-based CAPTCHA to protect your forms from spam and brute force. No external services, no tracking, and fully WordPress.org compliant.
Features:
<ul>
<li>WordPress login protection (captcha on wp-login.php)</li>
<li>Contact Form 7 integration via [pmcMathcaptcha] / [pmcMathcaptcha*]</li>
<li>WooCommerce login and registration protection</li>
<li>Configurable difficulty and operations (Addition/Subtraction/Multiplication/Random)</li>
<li>Hide captcha for logged-in users</li>
<li>Custom error message support</li>
<li>Optional rate limiting and honeypot</li>
<li>Failed login log + logged user list (admin pages)</li>
<li>Translation-ready</li>
</ul>

RMGCaptcha Math Guard

A lightweight math CAPTCHA for WordPress login, Contact Form 7, and WooCommerce forms.

Automattic

Michael Adams (mdawaffe)

sidney

NOTE: For must users, we recommend using <a href="http://jetpack.me/" rel="nofollow ugc">Jetpack</a> and 
its <a href="http://jetpack.me/support/beautiful-math-with-latex/" rel="nofollow ugc">Beautiful Math feature</a>. 
WP LaTeX offers additional control since it allows you to host your own LaTeX 
image server.
Writing equations and formulae is a snap with LaTeX, but really hard on a website. 
No longer. This plugin combines the power of LaTeX and the simplicity of WordPress 
to give you the ultimate in math blogging platforms.
Wow that sounds nerdy.
<h3>Other Plugins</h3>
<a href="http://sixthform.info/steve/wordpress/index.php?p=13" rel="nofollow ugc">Steve Mayer’s LatexRender Plugin</a> 
is based on a <a href="http://www.mayer.dial.pipex.com/tex.htm" rel="nofollow ugc">LaTeX Rendering Class</a> originally 
written by Benjamin Zeiss. Its requirements are somewhat different and has a different 
installation procedure.
<a href="https://wordpress.org/plugins/mathjax-latex/" rel="ugc">MathJax-LaTeX</a>
<a href="https://wordpress.org/plugins/simple-mathjax/" rel="ugc">Simple Mathjax</a>

WP LaTeX

WP LaTeX creates PNG images from inline $\LaTeX$ code in your posts and comments.

RMGCaptcha Math Guard vs WP LaTeX