Konstantin Obenland

This plugin lets you provide the user with search suggestions based on the information entered in the search field.
It adds an AJAX call to the search form, returning matches for the current search query from the database. 
There is no change of template files necessary as this plugin hooks in the existing WordPress API to unfold its magic.
<h4>Translations</h4>
I will be more than happy to update the plugin with new locales, as soon as I receive them! 
Currently available in:
<ul>
<li>English</li>
<li>Deutsch</li>
<li>Czech</li>
</ul>
<h3>Filter Reference</h3>
wpss_search_query_args (array|string)
<blockquote>
The query args, passed to <a href="https://codex.wordpress.org/Function_Reference/WP_Query" title="WP_Query in the WordPress Codex" rel="nofollow ugc">WP_Query</a>, either as an array or a string. 
 An array with the default query args and the current search query are passed to the filter.
</blockquote>
wpss_search_results (array)
<blockquote>
An array with the result strings as values. An array with the default results and the WP_Query object are passed to the filter.
</blockquote>

WP Search Suggest

С плагином интернет-магазина WP Shop работает отлично.

Чтобы саджест-поиск не искал в ненужных типах записей в файл functions.php достаточно включить функцию-фильтр, в которой настроить WP Search Suggest под себя:


    `/*
    * Customize plugin WP Search Suggest
    */
    function wp_search_suggest_custom($query_args) {

        $query_args += [
            'post_type' => ['post', 'page'],
            'posts_per_page' => 10,
        ];

        return $query_args;
    }
    add_filter( 'wpss_search_query_args', 'wp_search_suggest_custom');`

Отличный плагин для поиска по товарам с подсказками

I like this simple Plugin, I only would wish to have more results or to set an option for this ;)

Simple is the Best!

Great and clean plugin!

Provides title suggestions while typing a search query, using the built-in jQuery suggest script.

Xoda

Random Post Box is a plugin that lets you place a box anywhere on your blog, with template tag or shortcode, and 
load random posts with an interval and fade effect. It uses jQuery (Ajax) which means that the content is loaded without 
loading the rest of the page. The timings can be set in the admin options-panel.
The template tag is <code><?php random_post_box(); ?></code>. You can also use the shortcode <code>[random-post-box]</code> in a page or post.
<h4>Features</h4>
<ul>
<li>Insert placeholder with template tag</li>
<li>Insert placeholder with shortcode</li>
<li>Set time for displaying the post</li>
<li>Set times for fade in and fade out affect</li>
<li>Exclude or include posts by category</li>
<li>Exclude posts by age (in days)</li>
<li>Use title only</li>
<li>Use post excerpt or bodycontent</li>
<li>Strip tags from body</li>
<li>Show/hide post metadata</li>
</ul>

Random Post Box

The Random Post Box plugin places a box anywhere on the blog, where it loads random posts one-after-the-other.

WP Search Suggest vs Random Post Box