Ryan Kienstra

<ul>
<li>Must have Twitter Bootstrap 3 and Glyphicons.</li>
<li>Drag and drop 1-4 widgets in each horizontal row.</li>
<li>Easy: each widget has a button to edit, add, delete.</li>
<li>Build an entire page with widgets.</li>
<li>Approve changes before publishing them.</li>
<li>Works with themes “evolve,” “Unite,” and “DevDmBootstrap3.”</li>
<li>Works with “Openstrap,” but icons are unclear.</li>
</ul>
<iframe loading="lazy" class="youtube-player" width="640" height="360" src="https://www.youtube.com/embed/xIAAr8MLpJ0?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Setup: 
<iframe loading="lazy" class="youtube-player" width="640" height="360" src="https://www.youtube.com/embed/OeSU8EMSgDY?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>

Adapter Widget Rows

Drag and drop widgets on your full screen. They'll fit into horizontal rows, and re-size on mobile devices. Create up to 6 rows.

Andrico

A wonderful plugin to easily create many custom sidebars. These sidebars can then select in the creation of a post / page / custom post type / category / taxonomy. We give an order, and select several at once. 
You will see all active sidebars instead of seeing just one.
VISIT https://wordpress.org/plugins/advanced-widgets/
Español:
Un maravilloso plugin para poder crear fácilmente muchos sidebars. Estos sidebars luego los podremos seleccionar en la creacián de un post / page / custom post type / category / taxonomy. Podremos darle un orden, y seleccionar varios a la vez. 
Se verán todos los sidebars activos.
VISITAR https://wordpress.org/plugins/advanced-widgets/

Multiple Sidebars

A wonderful plugin to easily create many custom sidebars. These sidebars can then select in the creation of a post / page / custom post type / categor …

Adapter Widget Rows vs Multiple Sidebars