Robert Coster

Signalfire Expire Content allows you to set expiration dates and times for your WordPress posts and pages. When content expires, you can choose to automatically change it to draft status or redirect visitors to a custom URL.
Key Features:
<ul>
<li>Set expiration date and time for posts and pages</li>
<li>Choose expiration action: change to draft or redirect to URL</li>
<li>Easy-to-use metabox on post/page edit screens</li>
<li>Admin column showing expiration status</li>
<li>Automatic expiration checking on frontend</li>
<li>Security-focused with proper nonces and sanitization</li>
<li>Multilingual ready with translation support</li>
</ul>
Perfect for:
<ul>
<li>Time-sensitive content like promotions or events</li>
<li>Temporary pages that need automatic removal</li>
<li>Content that should redirect after a certain date</li>
<li>Managing seasonal or limited-time offers</li>
</ul>

Signalfire Expire Content

Adds expiration functionality to posts and pages with customizable actions when content expires.

Fumiki Takahashi

TAROSKY INC.

You can enter expiration date on edit screen. 
This plugin runs cron every minute to search expired posts and make them <code>private</code>.

Taro Clockwork Post

A WordPress plugin to expire post with specified date.

Signalfire Expire Content vs Taro Clockwork Post