Shohidul Islam Apu

CF7 Math Captcha is a lightweight plugin that adds a math captcha field to your Contact Form 7 forms. 
It helps reduce spam without using Google reCAPTCHA. 
Very simple to use: just add <code>[mathcaptcha* captcha-field]</code> to your Contact Form 7 form.

Math Captcha for Contact Form 7


Nice, clean and lightweight solution for adding Math Captcha to Contact Form 7. Works smoothly and keeps spam away without extra hassle. Good job, bro! 👏


Keeps spam away without extra hassle

Adds a simple math captcha field for Contact Form 7 to prevent spam submissions.

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.

Math Captcha for Contact Form 7 vs WP LaTeX