dFactory

<p><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.</p>
<p>By default, Hide widget on selected is enabled with no options selected, so all current widgets will continue to display on all pages.</p>
<p>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>.</p>
<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.

geomagas

<p>This plugin provides an [if] shortcode to conditionally render content. The syntax is the following:</p>
<pre><code>[if condition1 condition2=false condition3]{content}[/if]
</code></pre>
<p>Conditions are passed as attribute names. Multiple conditions evaluate to the result of ORing all of them. In other words, if at least one condition evaluates to the desired boolean result, {content} is rendered, otherwise it is discarded.<br />
Attribute values determine if we want the condition to be true or false. A value of <code>'0'</code>, <code>'false'</code>, <code>''</code> (the empty string), <code>'null'</code> or <code>'no'</code> means we expect the condition to be false. Anything else, including the absense of a value, is interpreted as true.</p>
<p>For example, suppose that we want to include a sentence in a post, but only for anonymous visitors:</p>
<pre><code>[if is_user_logged_in=no]The Sentence.[/if]
</code></pre>
<p>It also provides an [else] shortcode and an [eitherway] one for use inside [if] blocks. [else] will render its content if the condition evaluates to false, and [eitherway] will render its content regardless of the evaluation result.<br />
When used outside an [if] block, these shortcodes behave as if the whole content is surrounded by an [if] shortcode whose condition evaluates to true. In other words, an [else] shortcode would not render any content, while a [eitherway] one would. You can use as many of these shortcodes as you like in a single [if] block, which gives you the ability to do things like:</p>
<pre><code>    - Am I logged in?
    [if is_user_logged_in]- Yes you are.
    [else]- No you are not.
    [/else][eitherway]- I'm sorry, what?
    [/eitherway]- I said YOU A-R-E LOGGED IN!!!
    [else]- YOU ARE NOT LOGGED IN!!! What's the matter with you?[/else][/if]
</code></pre>
<p>A multitude of conditions are supported out-of-the-box. The following evaluate to the result of the corresponding <a href="https://developer.wordpress.org/themes/basics/conditional-tags/" rel="nofollow ugc">WordPress Conditional Tag</a>, using the no-parameter syntax:</p>
<pre><code>    is_single
    is_singular
    is_page
    is_home
    is_front_page
    is_privacy_policy
    is_attachment
    is_category
    is_tag
    is_tax
    is_author
    is_archive
    is_year
    is_month
    is_date
    is_day
    is_time
    is_feed
    is_search
    is_sticky
    is_preview
    has_term
    has_excerpt
    comments_open
    pings_open
    is_404
    is_user_logged_in
    is_super_admin
    is_multi_author
    is_multisite
    is_main_site
    is_child_theme
</code></pre>
<p>For example, the evaluation of the <code>is_page</code> condition is equivalent to calling <code>is_page()</code> with no parameter.</p>
<h3>Extending</h3>
<p>The functionality of the plugin can be extended by other plugins, by means of adding custom conditions through filters. To add a custom condition, a filter hook must be defined in the following manner:</p>
<pre><code>add_filter($if_shortcode_filter_prefix.'my_condition','my_condition_evaluator');

function my_condition_evaluator($value) {
    $evaluate=.... /* add your evaluation code here */
    return $evaluate;
}
</code></pre>
<p>Then, you can use your custom condition like so:</p>
<pre><code>[if my_condition]{content}[/if]
</code></pre>
<p>A big thanks to M Miller for the <a href="http://wordpress.stackexchange.com/a/123073/39275" rel="nofollow ugc"><code>normalize_empty_atts()</code></a> function.</p>


If Shortcode

This plugin provides an [if] shortcode to conditionally render content.

Restrict Widgets vs If Shortcode