jysafe

CN: 最基本的形式： 
 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。 
 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。
EN: This is a special captcha plugin. 
 It is not verified by math but by chemical formula and Calculation matrix and date of some event.

Traum Captcha

DBAR Productions

Easily generate shortcodes for the PTA plugins from Stephen Sherrard Plugins. Adds a PTA Shortcode generator button to the TinyMCE “classic editor” on page/post edit screens.
Generates shortcodes for the PTA Volunteer Sign Up Sheets plugin and the PTA Member Directory and Contact Form plugin, both of which are also free plugins on WordPress.org: 
<a href="https://wordpress.org/plugins/pta-volunteer-sign-up-sheets/" rel="ugc">PTA Volunteer Sign Up Sheets</a> 
<a href="https://wordpress.org/plugins/pta-member-directory/" rel="ugc">PTA Member Directory and Contact Form</a>
Also supports the Groups and Calendar Display extension for the PTA Volunteer Sign Up Sheets plugin: 
<a href="https://stephensherrardplugins.com/plugins/pta-volunteer-sign-up-sheet-groups/" rel="nofollow ugc">PTA Volunteer Sign Up Sheets Groups</a> 
<a href="https://stephensherrardplugins.com/plugins/pta-volunteer-sign-up-sheets-calendar-display/" rel="nofollow ugc">PTA Volunteer Sign Up Sheets Calendar Display</a>

PTA Shortcodes

Easily generate shortcodes for the PTA plugins from Stephen Sherrard Plugins. Adds a PTA Shortcode generator button to the TinyMCE "classic edito …

Traum Captcha vs PTA Shortcodes