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.

TIEro

Provides automated post maintenance. TIEtools is ideal for sites with a news feed or other automated posting setup that requires regular hands-off trimming (including autoblogging).
Post Expiry
<ul>
<li>Expires published, draft, pending and private posts on demand, based on age, maximum post retention, post views and post likes.</li>
<li>Integrates with BAW Post Views Count and WTI Like Post.</li>
<li>Sends notification emails for expired posts, if required.</li>
<li>Includes or excludes user-defined list of categories.</li>
<li>Leaves unwanted posts in the Trash.</li>
</ul>
Image Expiry
<ul>
<li>Can expire images based on post age, without removing the parent posts.</li>
<li>Expires images from published, draft, pending and private posts on demand.</li>
<li>Includes or excludes user-defined list of categories.</li>
<li>Deletes old images or leaves them “unattached” in the Media Library for later handling.</li>
</ul>
Duplicate Post Deletion
<ul>
<li>Finds and removes duplicate posts by title.</li>
<li>Keeps the oldest or newest original copy, removing all others.</li>
<li>Checks in published, draft, pending and private posts on demand. </li>
<li>Includes or excludes user-defined list of categories. </li>
<li>Sends notification emails for duplicate posts, if required.</li>
<li>Leaves unwanted posts in the Trash.</li>
</ul>
Server Log Deletion
<ul>
<li>Cleans up server error logs.</li>
<li>Checks for user-defined log filename.</li>
</ul>
All processes run automatically using wp-cron.

TIEtools Automatic Maintenance Kit

Automatic post and image expiry, duplicate post detection and server log deletion to keep your site clean and efficient.

Taro Clockwork Post vs TIEtools Automatic Maintenance Kit