michael_porter

Search by user adds an author filter to the post admin page. The drop down list includes all registered users for the blog.

Search By User

Search by user adds an author filter to the post admin page.

joharyjoox

Add an advanced data search and filter on admin page list content for each declared columns.
Also you can change the settings in the plugin manager admin page, to enable admin column search on specific post type and configure the search field for each column.
You can make search and filter on post data, post meta and terms association
This plugin don’t add custom columns but add search and filters features on existant columns. To add and manage custom column, please refer to the WordPress Hooks or other plugin such as CodePress Admin Columns.
<h4>Localizations</h4>
<ul>
<li>English</li>
<li>French</li>
</ul>

jPress Admin Column Search

My own review

Add an advanced data search and filter on admin page list content for each declared columns.

Search By User vs jPress Admin Column Search