Jake Spurlock

This simple plugin that adds a “Host-Header” HTTP header where you can define your webhost. Web partners that scan for compromised websites can notify hosts more effectively to cleanup sites.
This plugin is super overkill. Adding a simple file with the following to your <code>mu-plugins.php</code> will have the same effect.
<pre><code>// custom-host-header.php
add_filter( 'wp_headers', function( $headers ) {
 $headers['Host-Header'] = 'YOUR HOST NAME HERE';
 return $headers;
} );
</code></pre>

WordPress Host Headers

Add a Host-Header to track down hosting partners in helping combat web spam.

Dave Jesch

Steveorevo

DesktopServer for WordPress eases localhost to live server deployment by publishing hosting provider server details via a protected XML-RPC feed and API to an authorized administrator only. It also provides assisted deployments to hosting providers that support file system direct.

DesktopServer for WordPress

Great service to quickly deploy a dev site to a live server. 

WordPress Host Headers vs DesktopServer for WordPress