TIEro

This plugin is now available as part of <a href="https://wordpress.org/plugins/tietools-automatic-maintenance-kit/" title="TIEtools" rel="ugc">TIEtools</a>, which also includes post expiry and server log file removal.
A simple duplicate post deletion plugin. Spots posts with the same title and removes all but one of each.
<ul>
<li>Checks in published, draft, pending and private posts on demand</li>
<li>Includes or excludes user-defined list of categories</li>
<li>Moves all duplicate posts to the Trash (leaving the oldest or newest original copy)</li>
<li>Permanent post deletion is handled by WP’s built-in Trash removal</li>
<li>Power button to switch everything on and off without messing with the plugins page</li>
</ul>

TIEdupedeleter Simple Duplicate Post Deleter

Simple duplicate post deleter. Trashes duplicate posts based on status and category. Keeps newest or oldest original copy.

connormagyar

WP Event Manager is a great plugin — but it does not automatically expire events when they end. This plugin fixes that.
Auto Expire Events for WP Event Manager sets the <code>_event_expiry_date</code> meta field to 1 day after each event’s <code>_event_end_date</code>. If that date has passed, the event is marked as <code>expired</code>.
You can also retroactively apply this logic to existing events via Tools > Fix Event Expiry Dates.
This plugin is not affiliated with or endorsed by WP Event Manager or its developers.

Auto Expire Events for WP Event Manager

Automatically expire events in WP Event Manager based on their scheduled end date.

TIEdupedeleter Simple Duplicate Post Deleter vs Auto Expire Events for WP Event Manager