Frank Neumann-Staude

This plugin implements 2 new shortcodes.
[widget name=”” classname=” instance=””] to use a widget per shortcode in the content area from a page/post.
name is the name of the widget, e.g. Calendar. 
classname is the name of the PHP Class that implement the widget. 
You can use name or classname.
So are [widget name=”Kalender” instance=”title=Hello,World!”] 
and [widget classname=”WP_Widget_Calendar” instance=”title=Hello,World!”] 
produce the same output.
instance are the attributs of the widget. e.g. title=Hello,World! so the complete shortcode is 
[widget name=”Calendar” instance=”title=Hello,World!”]
For the instance list of the WordPress builtin Widgets look at https://codex.wordpress.org/Function_Reference/the_widget 
For other Widgets look at the source code from the widget or ask the widget author.
[sidebar name=””] to use a sidebar (with all widgets) in the content area from a page/post.
name is the name of the sidebar e.g. Showcase Sidebar so the complete shortcode is 
[sidebar name=”Showcase Sidebar”]
For own css styling, the plugin wraps the widgets in < div id=”Widget_Name” class=”widget_shortcode”> and the sidebar in < div id=”Sidebar_Name” class=”sidebar_shortcode”>
If your want report a bug or a feature, please use http://bugs.staude.net
Entrys in the changelog with numbers means the ticket id on 
http://bugs.staude.net

Widget or Sidebar Shortcode

Use widgets or sidebars per shortcode in the content area from pages/posts

Gregor Capuder

ProteusThemes

Primoz Cigler

<a href="https://codeship.com/projects/164619" rel="nofollow ugc"> </a>
Replace the theme default sidebars with your newly created sidebars.
This plugin was forked from the <a href="https://wordpress.org/plugins/custom-sidebars/" rel="ugc">Custom Sidebars plugin</a>, which we used for a few years, but their plugin development stalled, so we were forced to create this plugin. We really appreciate the work of developers of the original plugin!
This plugin allows you to create your own custom sidebars, configure them by adding widgets, and replace the default sidebars on posts or pages you want in just few clicks.
Here is the tl;dr list of the differences from original source:
<ul>
<li>Compatibility with the latest stable PHP version (namely PHP 7.0+).</li>
<li>Removed the “archive pages” functionality – replacing the custom sidebars on archive pages is not possible (e.g. on certain categories).</li>
<li>Open-sourced development on <a href="https://github.com/proteusthemes/custom-sidebars-by-proteusthemes" rel="nofollow ugc">GitHub</a>. Issue reports and pull requests welcome!</li>
<li>Covered with PHP unit tests.</li>
<li>Fixed couple of JavaScript errors.</li>
<li>Removed WP admin pointer.</li>
<li>Modern workflow with Grunt and Bower.</li>
<li>Removed heavy advertising.</li>
</ul>
<h3>Contact and Credits</h3>
This plugin is being developed by <a href="https://www.proteusthemes.com/" rel="nofollow ugc">ProtuesThemes</a>.
The original plugin: Custom sidebars is maintained and developed by <a href="http://premium.wpmudev.org" rel="nofollow ugc">WPMU DEV</a>. Original development completed by <a href="http://marquex.es/" rel="nofollow ugc">Javier Marquez</a>.

Custom Sidebars by ProteusThemes

Allows you to create custom sidebars. Replace sidebars for specific posts and pages.

Widget or Sidebar Shortcode vs Custom Sidebars by ProteusThemes