Mindshare Labs, Inc.

<p>A highly customizable AJAX-based WordPress search bar alternative with the ability to autocomplete <a href="http://en.wikipedia.org/wiki/Faceted_search" rel="nofollow ugc">faceted search queries</a>. Users can quickly and dynamically browse through your site’s taxonomies and post metadata to find exactly what they’re looking for, and results can be loaded beneath the search bar instantly.</p>
<h4>Features</h4>
<ul>
<li>Searches post title and body content</li>
<li>Can search by multiple keywords, and by full phrases</li>
<li>Highlights search terms in results</li>
<li>Option to send search queries as events to your Google Analytics account</li>
<li>Facets by post category</li>
<li>Can search in multiple categories (OR or AND search)</li>
<li>Category options are dynamically generated and autocompleted as you type</li>
<li>Attractive and lightweight interface based on jQuery, Backbone.js, and the VisualSearch.js library</li>
<li>Customizable results template using standard WordPress functions</li>
<li>Search through an unlimited number of user-specified taxonomies and meta fields (including data contained in Advanced Custom Fields).</li>
<li>Conduct radius searches against data stored in the ACF Map field (i.e. search for posts within x km of a user-specified location).</li>
</ul>


WP Ultimate Search

Powerful AJAX-based search alternative which supports faceting queries by taxonomies, terms, location, and post metadata.

Md Aminur Islam

PluginizeLab

<p>The Metadata Viewer plugin displays metadata keys and values for posts (posts, pages, custom post types), users, comments, taxonomy terms, WooCommerce products, and WooCommerce orders directly in admin edit screens. It also includes an integrated realtime search feature.<br />
Install one lightweight plugin to inspect metadata across common WordPress and WooCommerce object types from their native edit pages.</p>
<h4>Features</h4>
<ul>
<li>Posts Metadata Viewer</li>
<li>Custom Post Types Metadata Viewer</li>
<li>Pages Metadata Viewer</li>
<li>Users Metadata Viewer</li>
<li>Comments Metadata Viewer</li>
<li>Taxonomy Terms Metadata Viewer</li>
<li>WooCommerce Products Metadata Viewer</li>
<li>WooCommerce Orders Metadata Viewer</li>
<li>HPOS-aware WooCommerce Orders metadata handling (supports sync on/off modes)</li>
<li>Unified metadata table UI and realtime search across supported admin screens</li>
</ul>
<h3>Support</h3>
<p>If you find this plugin useful, consider supporting its development through a <a href="https://www.buymeacoffee.com/aiarnob" rel="nofollow ugc">donation</a>.</p>


Metadata Viewer

A plugin or theme developer can view metadata by this plugin easily.

WP Ultimate Search vs Metadata Viewer