Tapcha
A gesture based CAPTCHA scheme. Integrates with Contact Form 7
A gesture based CAPTCHA scheme. Integrates with Contact Form 7
Invisible and secure captcha which works in the background. No tracking of visitors.
Simple PHP-GD based captcha to replace tracking prone systems like Google recaptcha
The YouMe ID plugin provides two security features, i.e. an alternative CAPTCHA service and a…
This is a simple captcha system. That you can setting how many letter you would…
LazyCaptcha is a small and lazy plugin to prevent bots from spamming your comments.
This is a free plugin to protect your WordPress website.
CN: 最基本的形式:
This plugin used to apply/add login captcha field to wordpress login form.