ipeat

Original authors: Keith McDuffee [http://www.gudlyf.com/] 
[http://www.gudlyf.com/archives/2005/03/08/wordpress-plugin-category-visibility/] 
Rich Hamilton [http://ryowebsite.com/] 
[http://ryowebsite.com/wp-plugins/category-visibility/] 
Projekt Seven his site is now down was tastycornbread.com
<ul>
<li>1.0.1 Modified Projekt Seven’s work to include Front, Search, Feed, Archives features for WP 2.3</li>
<li>1.0.2 Fixed bugs that would cause Archives and Feeds to blow up</li>
<li>1.0.3 Fixed Duplicate post on Archives, Home, and Feeds when containing multiple Categories and added Tag support</li>
<li>1.0.4 Fixed empty search results and Ghost categories in the wp_list_categories function</li>
<li>1.0.5 Fixed broken install code and title_li option for wp_list_categories (FYI: wp_list_cats tag is deprecated and no longer supported by this plugin.)</li>
<li>1.0.6 Fixed an additional title_li option related bug and duplication on Search</li>
<li>1.0.7 Fixed empty front on 2.5.1</li>
<li>1.0.8 Dropped tag and links support for 2.7 compatibility</li>
</ul>

Category Visibility-iPeat Rev

Original authors: Keith McDuffee [http://www.gudlyf.com/]

MartinCV

This plugin allows you to hide any posts on the home page, category page, search page, tags page, authors page, RSS Feed, REST API, Post Navigation, Native Recent Posts Widget, XML sitemaps, Yoast SEO sitemap, breadcrumbs and internal link suggestions.
<a href="https://demo.tastewp.com/whp-hide-posts" title="Demo" rel="nofollow ugc">Try the Demo</a>
<h4>Features:</h4>
<ul>
<li>Hide posts on specific archives and pages (home, categories, search, tags, authors, date, blog page, etc.)</li>
<li>Hide posts from RSS Feed and REST API</li>
<li>Hide posts from XML sitemaps (WordPress core and Yoast SEO)</li>
<li>Hide posts from Yoast SEO breadcrumbs and internal link suggestions</li>
<li>Full Gutenberg Block Editor support with metabox in sidebar</li>
<li>Works with Gutenberg Query Loop and Latest Posts blocks</li>
<li>Custom Post Types support – enable hide functionality for any post type</li>
<li>WooCommerce integration – hide products on store page, category pages, and REST API</li>
<li>Bulk Edit and Quick Edit support for efficient management</li>
<li>Custom database table for optimized performance</li>
<li>Comprehensive caching for fast page loads</li>
</ul>

Hide Posts

The plugin does exactly do what I was looking for the way I expected it to work without the need to configure anything. Thank you so much! If I wasn't a software developer myself, I'd hire you! And I'd donate, but I couldn't find any hint to the usual suspects ...

Magnificent

Allows you to hide any posts on the home page, category page, search page, tags page, authors page, RSS Feed, REST API, XML sitemaps, SEO integrations …

Category Visibility-iPeat Rev vs Hide Posts