HelgaTheViking

Replace the default taxonomy boxes with a custom metabox that uses radio buttons… effectively limiting each post to a single term in that taxonomy.
A plugin options page allows the user can select which taxonomies she’d like to switch to using the custom radio-button style metabox.
Originally based on the the <a href="https://github.com/stephenh1988/Radio-Buttons-for-Taxonomies" rel="nofollow ugc">class by Stephen Harris</a>
<h4>Support</h4>
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.
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>

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.

Paul Annekov

CommFort WebChat is the plugin that helps to realize web interface for <a href="http://http://www.commfort.com" rel="nofollow ugc">CommFort chat</a>. Web interface allows to chat using your favourite browser and supports the most important functions of the chat (channel choose, fast message send and receive, authorize under you nick, etc.). Web interface gives access to view the chat and send messages anonymously.
-=Features=-
<ul>
<li>Emoticons</li>
<li>User information</li>
<li>Sending messages from the web interface to the server with the subsequent publication in the active channel</li>
<li>Chat rooms</li>
<li>AJAX technology to get new messages from the database and records sent messages to the database</li>
</ul>

CommFort WebChat

CommFort WebChat provides a web-based chat CommFort.

Radio Buttons for Taxonomies vs CommFort WebChat