Snat

This plugin is a really simple and quick plugin that puts the hostname of the server that the page was viewed from. This is useful if you are hosting your blog on many servers and want to see which one the current page came from. It puts the hostname as a HTML comment in the source code where the footer is. Now there isn’t many reasons you may use this for but for the ones that do want to use it, here it is.

Snat's Hostname Detector

This plugin is a really simple and quick plugin that puts the hostname of the server that the page was viewed from. This is useful if you are hosting  …

kellymartinv

Portly Router is a plugin designed to be used with <a href="https://portly.co" rel="nofollow ugc">Portly</a> 
to access your local WordPress setup via a public URL.
The plugin alters all WordPress-generated URLs according to the server’s current hostname and handles reverse-proxy HTTPS connections. It essentially allows using a public domain without configuring VirtualHosts in Apache or altering the Site URL in the WordPress installation.

Portly Router

Zero-config plugin that integrates with Portly for accessing your local
installation at a public URL.

Snat's Hostname Detector vs Portly Router