pRove yoU are a Human! (RUH) image based Captcha plugin
RUH Captcha helps filtering out all robot attempts to register/comment.
Plugin-tag: captcha
MultiMediaMonster Fancy captcha
The plugin adds a fancy drag and drop (or click on mobile and tablets) captcha…
wp-login captcha
You want a captcha protected wplogin or wpadmin login? then use this plugin
Captcha Enjoy
Captcha Enjoy ile sitenizi botlardan koruyun, site içerigiyle ilgili eglenceli sorularla kullanıcılarınızı göz bozan captchalardan…
wpExLinks
Let admin create a page to do automatic exchange links with other webmaster
PollMe
An easy to modify poll system that uses Google Charts to display the results
Protect Ai Login
Change default login site to a custom URL, block spam, bot registration, and brute-force using…
QuizMe
An easy to modify quiz system
SimplyCaptcha WordPress Plugin
A new captcha system that uses simple question based questions instead of the other complicated…
Logical Captcha
Integrates a logic captcha to verify that the registrant is a human and not a…
Securimage-WP-REG
Securimage-WP-REG adds captcha ptotection from Securimage-WP plugin on register pages.
Minor Improvements
Package of several minor improvements. Mix of my other plugins in simpler edition. Why to…
General Contact Form
Genaral Contact From plugin allows a wordpress admin to easily create and add contact forms…
Submission
Easy way to collect user submitted content for you blog.
μcaptcha
Integrates μcaptcha with WordPress, including comment and login/registration forms.
Ultimate Captcha reCAPTCHA Plugin for WordPress
This is a free plugin to protect your WordPress website.
Captcha Novami
Invisible and secure captcha which works in the background. No tracking of visitors.
Traum Captcha
CN: 最基本的形式：
GreCAPTCHA
Protects WordPress website forms from spam and brute-force attacks with Google reCAPTCHA.
Login Captcha
This plugin used to apply/add login captcha field to wordpress login form.