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Math Captcha is a 100% effective CAPTCHA for WordPress that integrates into login, registration, comments, Contact Form 7 and bbPress.

By: dFactory

(38)
Last Updated: 2 weeks ago
10,000+ active installs
Compatible up to: 4.1.1
(37)
Last Updated: 3 weeks ago
10,000+ active installs
Compatible up to: 4.0.1

The Add new recaptcha google plugin allows you to implement a super security REcaptcha form into web forms.

By: webdesignjc

(2)
Last Updated: 3 weeks ago
40+ active installs
Compatible up to: 4.0.1

Keep spam bots out of your site without annoying Captcha codes, puzzles or faulty blacklists. Enterprise spam protection for sites of all sizes.

By: oxfordbio

(10)
Last Updated: 1 month ago
300+ active installs
Compatible up to: 4.1.1

This antispam plugin provides very simple(one-click) and powerful captcha for your blog.

By: ref

(2)
Last Updated: 7 months ago
3,000+ active installs
Compatible up to: 4.0.1

An easy to use wordpress Captcha plugin to prevent spam on your site. You can use Image Captcha to protect comments and the admin panel.

By: Captcha Soft

(4)
Last Updated: 9 months ago
2,000+ active installs
Compatible up to: 3.9.2

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