Tom J Nowell

An easy way of telling apart different installs of WordPress ( e.g. live/production/local ) via the admin bar. Super admins see a colour coded machine name in the admin bar, with an IP submenu. Mobiles will see a colour coded square dot

Local Indicator

A fast way of seeing which machine a WordPress install is running on.

Robert Wetzlmayr

This simple and lightweight WordPress maintenance plugin puts the site into maintenance mode by sending a ‘503 Service Unavailable’ status to all unauthenticated clients.
Thus it effectively inhibits search engines from both losing your site’s existing content and indexing your maintenance page as well, so your site will not lose its rankings while it is out of service.
Content will even be hidden from consumers of the site’s RSS or Atom feeds.
Please refer to the <a href="http://talkpress.de/blip/wet-maintenance-wordpress-plugin" rel="nofollow ugc">WordPress Maintenance Plugin</a> article for additional information.

Site Maintenance

Puts the site into maintenance mode by sending a '503 Service Unavailable' status to all unauthenticated clients.

Local Indicator vs Site Maintenance