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Linux 软件免费装
在这里免费安装WordPress以及其他软件
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captcha protection
WordPress Captcha and Anti Spam Plugin by Captcha Bank
Captcha Bank is a anti-spam captcha plugin for WordPress forms that adds secure image captcha or math captcha to prevent spam.
Plugin Name
CH Captcha use for Add captcha to WordPress on contact form 7.
NoMoreCaptchas
Stop spam bots from registering, logging in, filling out contact forms and commenting on your site without using annoying Captcha codes or puzzles.
WP reCaptcha - Appsaur.co
WP reCaptcha authenticate the visitor is a human verifying by Google ReCaptcha