jysafe

<p>CN: 最基本的形式：<br />
    输入上图物质分子式，看着复杂，其实挺简单的，数数各个原子个数，按照顺序堆起来就行了。<br />
    此外还有计算矩阵、说出事件发生日期的验证码，三者随机出现。</p>
<p>EN: This is a special captcha plugin.<br />
    It is not verified by math but by chemical formula and Calculation matrix and date of some event.</p>


Traum Captcha

exportsmedia

<p>Restrict New Users by Domain makes it easy to whitelist or blacklist email domains that new users can use when registering. If using the whitelist, only new users who enter an email domain on the whitelist will be allowed to create an account. If using the blacklist, a user who enters an email domain on the blacklist will not be allowed to register. This plugin is NOT multisite compatible.</p>
<h4>Features</h4>
<ul>
<li>Easy to use settings page for adding domains</li>
<li>No limit on domains to restrict</li>
<li>Customize the error message for restricted domains</li>
<li>Uses built in WordPress actions, no CSS or JS</li>
</ul>
<h4>THIS PLUGIN DOES NOT WORK WITH MULTISITE</h4>
<p>Restrict New Users by Domain makes it easy to whitelist or blacklist email domains that new users can use when registering. If using the whitelist, only new users who enter an email domain on the whitelist will be allowed to create an account. If using the blacklist, a user who enters an email domain on the blacklist will not be allowed to register.</p>


Restrict New Users by Domain

Whitelist or Blacklist email domains used for new user registration.

Traum Captcha vs Restrict New Users by Domain