DjZoNe

This plugin was born because there was a no other real alternative to enable content sparationd and some CMS like functionalities in WordPress. 
The main goal was, to enhance WordPress’s functionalities, to hide some unwanted categories, from defined parts of the blog.
Today, ACE can override your search results, your RSS feed listing, your category listing, your recent post, and recent post widgets and also your entry page, or even hide whole categories of posts from web crawlers if you want to. 
This is great, for SEO reasons, for content separation, for grouping information, and handle them as real sub pages.
<a href="https://downloads.wordpress.org/plugin/advanced-category-excluder.1.4.5.zip" rel="nofollow ugc">Download now!</a>
<a href="http://ace.dev.rain.hu/" rel="nofollow ugc">Support</a> | 
<a href="http://ace.dev.rain.hu/faq/" rel="nofollow ugc">FAQ</a> | 
<a href="http://djz.hu" rel="nofollow ugc">DjZoNe</a> | 
<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=paypal@djz.hu&item_name=Advanced%20Category%20Excluder%20for%20Wordpress" rel="nofollow ugc">Donate</a>
Some functions:
<ul>
<li>Integration with Google (XML) Sitmap Generator plugin </li>
<li>Effective category management</li>
<li>Effective content separation </li>
<li>Enables CMS-like functionality</li>
<li>RSS feed manipulation</li>
<li>Search result manipulation </li>
<li>Category list manipulation</li>
<li>Support for Event Calendar </li>
<li>Handles multiple link categories</li>
<li>noindex, nofollow web crawler options for robots – great for SEO </li>
<li>Own Recent Comments, Recent Posts and Categories widgets have been added </li>
<li>Backward SQL compatibility with MySQL 4.0</li>
<li>Nice control panel, called ACE Dashboard</li>
<li>Localization added (swedish, french and hungarian translation included)</li>
<li>Bundeled POT file for translators</li>
<li>WordPress 2.7 UI</li>
</ul>

Advanced Category Excluder

The No.1 content separator, content manager, content excluder, sidebar widget manager plugin to enable CMS like functionality.

Themeisle

Valerio Souza

Remove Category URL strips the <code>/category/</code> base from your category URLs, turning something like <code>/category/my-category/</code> into simply <code>/my-category/</code>.
Just activate, and you’re done. No configuration needed.
<h3>Features</h3>
<ul>
<li>Creates cleaner URLs like <code>mydomain.com/my-category/</code> and <code>mydomain.com/my-category/my-post/</code></li>
<li>Works out of the box with no settings to configure</li>
<li>Supports multiple sub-categories</li>
<li>Automatically 301 redirects old category URLs to the new structure (SEO-friendly)</li>
<li>Sitemaps are automatically updated with the new URLs after activation</li>
<li>Compatible with WordPress Multisite, WPML, and popular sitemap plugins</li>
</ul>
<h3>Why remove /category/ from URLs?</h3>
The <code>/category/</code> base in WordPress URLs is there by default, but it doesn’t help your visitors or search engines understand your content any better. When you remove <code>/category/</code> from URLs, you get cleaner paths like <code>mydomain.com/news/</code> instead of <code>mydomain.com/category/news/</code>. They’re shorter, easier to remember and share, and more consistent with how your pages are already structured.
Shorter URLs also tend to look better in search results and make your site feel more polished overall. Removing the category base is a small change that makes your whole URL structure cleaner.
<h3>Support</h3>
We’re here to help. Feel free to open a new thread on the <a href="https://wordpress.org/support/plugin/remove-category-url/" rel="ugc">Support Forum</a>.
<h3>Useful Resources</h3>
<ul>
<li>If you like this plugin, you’re sure to love <a href="https://themeisle.com/wordpress-plugins/" rel="nofollow ugc">our other plugins</a> as well.</li>
<li>Our blog is a great place to <a href="https://themeisle.com/blog/" rel="nofollow ugc">learn more about WordPress</a>.</li>
<li>Get the most out of your website with our helpful <a href="https://youtube.com/playlist?list=PLmRasCVwuvpSep2MOsIoE0ncO9JE3FcKP" rel="nofollow ugc">WordPress YouTube Tutorials</a>.</li>
</ul>

Remove Category URL – Remove 'category' base from category permalinks

Remove Category URL strips the /category/ base from your category URLs, turning something like /category/my-category/ into simply /my-category/.

Advanced Category Excluder vs Remove Category URL – Remove 'category' base from category permalinks