Olly - OWMC

Many people use WP as a fully fledged CMS, building sites which don’t even have a blog. In such cases, the WP comments functionality is a waste of pixels and needs completely removing. Comment Crusher was made to quickly and thoroughly clear your install of every trace of comment functionality.
For many years I have used this collection of hooks to achieve this end. So came the idea to put it in a plugin and make it available to the masses. Simply activate this plugin and never worry about comments again.
When activated, even though all pre-existing comments on your site won’t be visible, they do still exist in your database. This plugin doesn’t delete them. And so deactivating the plugin will restore full comments functionality and reveal all previous comments again.
This plugin does not collect any data, neither does it modify your database.
<ul>
<li>Disable comment and trackback support from all post-types</li>
<li>Deactivate comments and pings on the front end</li>
<li>Hide all existing comments</li>
<li>Remove the comment metabox from the dashboard</li>
<li>Remove comments link from the toolbar</li>
<li>Remove the admin menu link for comments</li>
<li>Redirect anyone trying to access the comments admin page </li>
</ul>
This plugin was built using the <a href="https://wppb.me" rel="nofollow ugc">WP Plugin Boilerplate</a> and the custom functionality code I think goes back to <a href="https://gist.github.com/mattclements/10a997775894c7a0eba1" rel="nofollow ugc">Matt Clements in 2013</a>.

Comment Crusher

Disable and remove comments on your WP site.

Milan Dinić

Ryan Hellyer

Bjørn Johansen

Brian Layman

Stops automated spam while remaining as unobtrusive as possible to regular commenters. <a href="https://geek.hellyer.kiwi/products/spam-destroyer/" rel="nofollow ugc">The Spam Destroyer plugin</a> is intended to be effortless to use. Simply install, and enjoy a spam free website 🙂
<h3>Credits</h3>
<ul>
<li><a href="https://wordpress.org/support/users/omahoung/" rel="ugc">omahoung</a> – Bug reporting</li>
<li><a href="https://wordpress.org/support/profile/stromhalm" rel="ugc">Stromhalm</a> – Bug reporting</li>
<li><a href="http://ocaoimh.ie/" rel="nofollow ugc">Donncha O Caoimh</a> – Developer of Cookies for Comments, functionality of which is incorporated into Spam Destroyer</li>
<li><a href="http://elliottback.com/" rel="nofollow ugc">Elliot Back</a> – Developer of WP Hashcash, functionality of which is incorporated into Spam Destroyer</li>
<li><a href="http://nettsett.no/" rel="nofollow ugc">Marte Sollund and Ingvild Evje</a> – Bug reporting</li>
<li><a href="http://eHermitsInc.com/" rel="nofollow ugc">Brian Layman</a> – Code advice</li>
<li><a href="http://ronalfy.com/" rel="nofollow ugc">Ronald Huereca</a> – JS advice</li>
<li><a href="https://twitter.com/shawngaffney" rel="nofollow ugc">Shawn Gaffney</a> – Bug reporting</li>
<li><a href="http://konstruktors.com/" rel="nofollow ugc">Kaspars Dambis</a> – Bug reporting</li>
<li><a href="http://www.wanderingjon.com/" rel="nofollow ugc">Jon Brown</a> – Added error message filter</li>
</ul>

Spam Destroyer

Kills spam dead in it's tracks. Be gone evil demon spam!

Comment Crusher vs Spam Destroyer