innovaxp

This plugin displays a countdown on a post.
Translation ready (i18n), now includes full translation to:
<ul>
<li>English (default).</li>
<li>Italian.</li>
</ul>
If you have a new translation for your language, please send us by email and we’ll add it to the package.

NS Countdown

This plugin displays a countdown on a post.

saill

Lets you set a date to launch or suspend your site automatically. Lets you choose which admins have access to the plugin settings. Generates beautiful Coming Soon and Site Suspended pages with customizable background image or color and and an optional message box that can also allow users to log in from the coming soon page. Alternatively allows you to redirect to a different URL. This plugin is based on the <a href="https://wordpress.org/plugins/underconstruction/" rel="ugc">underConstruction</a> plugin. A complete description along with screenshots and usage instructions is <a href="http://www.wickedcleverlabs.com/site-launcher/" rel="nofollow ugc">here</a>.

Site Launcher

Timed launch or suspension of your site with custom "site unavailable" pages or with a redirect.

NS Countdown vs Site Launcher