Vincent Robic

This plugin updates all URLs in the database after moving your site from one domain to another. It is useful for switching between development, testing and production stages.
Why this plugin ? WordPress stores absolute URLs in :
<ul>
<li>posts (including pages and custom post types), drafts</li>
<li>excerpts</li>
<li>medias</li>
<li>custom fields</li>
<li>options (including ‘siteurl’ and ‘home’, in wp_options table)</li>
<li>GUIDs (only for development)</li>
</ul>
When moving your website to a new domain, all these links will point to your old domain name and become outdated.
<h3>Prerequisite</h3>
Before moving the website, consider making a backup of the database. Then, once the site has been moved, you will need to manually update ‘siteurl’ in the ‘wp_options’ table, in order to access the WordPress Administration panel. 
For further information, see https://codex.wordpress.org/Changing_The_Site_URL

UmanIT Update URLs

Updates all URLs in the database after moving your site from one domain to another.

Andy Stratton

bmoredrew

WP Maintainer

Sizeable Labs

Referer spam has been growing and clogging up website analytics data (such as Google Analytics) with fraudulent traffic statistics. Millions of users are reporting issues and it has become a major nuisance.
Block these malicious sites easily. All major referer spam domains blocked out of the box and you can customize the domain keyword lists to block any domains you wish. Brought to you by the team of WordPress experts at WP Maintainer.

Referer Spam Blocker

Block/blacklist known (and custom) spam referring domains at the WordPress level with an HTTP 403 Forbidden page.

UmanIT Update URLs vs Referer Spam Blocker