Misha Rudrastyh

The category filter block allows you to filter posts displayed with the standard Query Loop block by category, without a page refresh. The Interactivity API is fully supported.
<h4>Features</h4>
✅ The category filter can be displayed as links or as a select dropdown field. 
✅ You can display a post count number near each category. 
✅ Custom All Categories text 
✅ Works without page refresh (AJAX + Interactivity API) 
✅ Sticky positioning 
✅ Block styles customization (Font size, Padding, Margin) 
✅ The block can add parameters to the page URL, for example, ?filter-category=travel
The plugin also has a PRO version, its main difference is that it supports filtering by any custom taxonomy – Tags, Product Categories, Product Tags, Brands, etc. It has a bunch of other features too.
<h4>Pro features</h4>
✅ Custom taxonomies are supported. 
✅ Multiple taxonomy filters within the same Query Loop. 
✅ Sort categories (terms) in the filter alphabetically, by post count, or in a custom order. 
✅ The filter can be displayed as buttons with the possibility of style customization (color, background color, border, border radius, etc).
🚀 <a href="https://rudrastyh.com/plugins/taxonomy-filter-block" rel="nofollow ugc">Upgrade to Pro</a>

Category Filter Block

Just a simple category filter block with the Interactivity API support.

creare

Creare

The Advanced Custom Post Search (ACPS) plugin can be easily integrated into any WordPress theme that uses widgets. Not only this but you can also integrate a search form into any post, page or WordPress template using our simple shortcodes.
Featuring unlimited, fully-customisable forms from which you can quickly search (by taxonomy term[s]) and display your custom post type results.
ACPS harnesses WordPress’ own tax queries to provide flexible results pages that address the lack of built-in taxonomy & custom post type search options.
Additional to this, we have also integrated theme functionality for developers who feel comfortable with adding their own folders and files. For more information on how to do this, see the FAQ.
Here are some of the main features:
<ul>
<li>Unlimited form creation</li>
<li>Select any of your custom post types (including those created by other plugins)</li>
<li>Taxonomy filters for selected custom post type</li>
<li>Optional text input field</li>
<li>Use custom results pages of your own</li>
<li>Override default results page/loop via a theme</li>
<li>Widget Support</li>
<li>Shortcode Support</li>
<li>‘Out of the box’ compatibility with numerous WordPress themes (twentyfourteen/ thirteen etc)</li>
<li>Complete control over form styles</li>
</ul>
Please visit our website for more <a href="http://www.creare.co.uk/services/extensions/wordpress" rel="nofollow ugc">free WordPress plugins</a>.

Advanced Custom Post Search

A useful plugin for creating search forms & results pages for custom post types & taxonomies.

Category Filter Block vs Advanced Custom Post Search