CyanSmoker

<ul>
<li>Keep updated! http://nexus.zteo.com/</li>
<li>This plugin can be used to display a different theme for each page of your blog.</li>
<li>This plugin can be used to display a different theme for each one of your blog posts.</li>
<li>The interface used to configure this is very user-friendly. Even friendlier since v1.3.</li>
<li>Many thanks to Stephen Carroll whose domain page’s script motivated me to write this plugin.</li>
<li>Thanks also go to emposha.com for their image selection script, which I shamelessly hacked and surely made worse.</li>
</ul>
<h3>Limitations</h3>
<ul>
<li>Due to WordPress selecting themes and stylesheets very early on when building a page, I cannot use WordPress’ “official” way to detect the current page/post. Therefore, you may find that this plugin does not work correcly if your setup is extremely exotic. Contact me if this happens.</li>
</ul>


Page Theme

Specify the theme (not template, that is already taken care of by Wordpress) you wish to use with each given page or blog post.

HelgaTheViking

<p>Replace the default taxonomy boxes with a custom metabox that uses radio buttons… effectively limiting each post to a single term in that taxonomy.</p>
<p>A plugin options page allows the user can select which taxonomies she’d like to switch to using the custom radio-button style metabox.</p>
<p>Originally based on the the <a href="https://github.com/stephenh1988/Radio-Buttons-for-Taxonomies" rel="nofollow ugc">class by Stephen Harris</a></p>
<h4>Support</h4>
<p>Support is handled in the <a href="https://wordpress.org/support/plugin/radio-buttons-for-taxonomies" rel="ugc">WordPress forums</a>. Please note that support is limited and does not cover any custom implementation of the plugin. Before posting a question, read the <a href="https://wordpress.org/plugins/radio-buttons-for-taxonomies/#faq" rel="ugc">FAQ</a> and confirm that the problem still exists with a default theme and with all other plugins disabled.</p>
<p>Please report any bugs, errors, warnings, code problems to <a href="https://github.com/helgatheviking/Radio-Buttons-for-Taxonomies/issues" rel="nofollow ugc">Github</a></p>


Radio Buttons for Taxonomies

Thank you so much for this plugin, so easy to use and makes creating a single category situations much easier.

Oh this is a life saver!

JUST WORKS

Many thanks to the author for this great plugin. Does one things and does it very well. Works with classic editor and block editor.

5 stars is not enough. Works with Gutenberg

We've been using this plugin for longer than we can remember, never had any issues whatsoever, highly recommended!

Excellent

Replace the default taxonomy boxes with a custom metabox that uses radio buttons... effectively limiting each post to a single term in that taxonomy.

Page Theme vs Radio Buttons for Taxonomies