ktou

komainu8

This plugin provides fast and rich full text search features based on <a href="http://mroonga.org/" rel="nofollow ugc">Mroonga</a>. Mroonga is a MySQL/MariaDB plugin. You don’t need to introduce a new server only for full text search. You can use existing MySQL/MariaDB server. It reduces maintainance cost.
Here are features:
<ul>
<li>Fast full text search</li>
<li>Google like query syntax such as <code>(KEYWORD1 OR KEYWORD2) -KEYWORD3</code></li>
<li>Sort by relevance</li>
</ul>
Here are features to be implemented:
<ul>
<li>Keyword highlight</li>
<li>Snippet</li>
<li>Related posts</li>
<li>Auto complete</li>
<li>Synonym</li>
<li>…</li>
</ul>

Mroonga

Fast and rich full text search features for WordPress!

fukushima

This plugin is a modification of “Fatastic ElasticSearch plugin”. This plugin is NOT a simple drop-in, it is expected you have some understanding of what an Elasticsearch server is and how it works. The goals/features of this plugin are:
<ul>
<li>Replace the WordPresss standard search with Elasticsearch.</li>
<li>Ability to specify what data points should be indexed and what the relevancy of those points are.</li>
<li>Fall back to WordPress standard search if Elasticsearch server is not responsive.</li>
<li>Update Elasticsearch server when posts are removed/added/unpublished.</li>
<li>Make “match query” selectable as search type.</li>
</ul>

Kumihimo

Replace the WordPresss standard search with a Elasticsearch.

Mroonga vs Kumihimo