nickpdx

PageSpot uses private Pages as groups of content to be inserted in various 
other places in your Page or theme. By default it creates two special 
private Pages:
PageSpot Snippets are pieces of another Page. To create a new snippet, 
just 
create a child Page of the [PageSpot] Page Snippets page. PageSpot will 
ensure your new snippet remains Private and inaccessible on its own. 
PageSpot then expects you to assign the snippet to a Spot on one of your 
public Pages.
To do that, you will first need to create custom templates in your theme 
directory. If you create a template with “pagespot” in the name, and select 
it in the Page editor, the PageSpot admin box will become active for that 
Page. PageSpot will parse the template for annotations that look like 
“[[PageSpot:Foo]]”, and allow you to assign a PageSpot Snippet to the 
“Foo” spot.
The final result is that when viewed from the front end, your Page will have 
the assigned snippet Page’s content inserted in place of your [[PageSpot]] 
annotation. This lets you build up complex layouts for a Page, composed of 
other Pages. content which you can edit and replace independent of each 
other.
Sidebar Items are pages that together comprise a sidebar for your theme. 
To create a sidebar, just create a private Page named “[Sidebar] Foo”. All 
child pages of that page constitute the Foo sidebar. PageSpot will add a 
meta-box in the Page Edit screen to select the sidebar to use for the 
current Page. Adding some simple PHP code to your sidebar template is all 
you then need to bring this functionality into your custom theme:
<pre><code><?php PageSpot::print_sidebar(); ?>
</code></pre>

PageSpot

PageSpot facilitates more complex layout options for Pages, and dynamically assignable sidebar content on a per-Page basis.

dFactory

<a href="http://www.dfactory.eu/plugins/restrict-widgets/" rel="nofollow ugc">Restrict Widgets</a> is all in one solution for widget management in WordPress. It lets you easily control the pages that each widget will appear on and avoid creating multiple sidebars and duplicating widgets. You can also set who can manage widgets, which sidebars and widgets will be available to selected users, which widget options will be available and how it will be displayed.
By default, Hide widget on selected is enabled with no options selected, so all current widgets will continue to display on all pages.
For more information, check out plugin page at <a href="http://www.dfactory.eu/" rel="nofollow ugc">dFactory</a> or plugin <a href="http://www.dfactory.eu/support/forum/restrict-widgets/" rel="nofollow ugc">support forum</a>.
<h4>Features include:</h4>
<ul>
<li>Hide or display each widget on selected pages, posts, categories, custom taxonomies, custom post types, single posts, archives, special pages, for logged in or logged out users, current language, mobile device and so on</li>
<li>Select which user roles are restricted to manage widgets</li>
<li>Select which sidebars will be restricted to admins only</li>
<li>Select which widgets will be restricted to admins only</li>
<li>Select which widget options will be restricted to admins only</li>
<li>Choose to display or not widget options as groups</li>
<li>Option to modify the is_active_sidebar() function to use Restrict Widgets display settings</li>
<li>Multisite compatible</li>
<li>WPML compatible</li>
<li>Polylang compatible</li>
<li>.pot file for translations included</li>
</ul>
<h4>Translations:</h4>
<ul>
<li>Chinese – by Changmeng Hu</li>
<li>Czech – by Martin Kucera</li>
<li>German – by <a href="http://apart-webdesign.de/" rel="nofollow ugc">Angelika Reisiger</a></li>
<li>Hebrew – by <a href="http://atar4u.com/" rel="nofollow ugc">Ahrale Shrem</a></li>
<li>Italian – by <a href="http://sododesign.it/" rel="nofollow ugc">Davide Pante</a></li>
<li>Polish – by Bartosz Arendt</li>
</ul>

Restrict Widgets

Works with SiteOrigin pagebuilder, quick and easy to use. 

Awesome!

All in one widgets and sidebars management in WordPress. Allows you to hide or display widgets on specified pages and restrict access for users.

PageSpot vs Restrict Widgets