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.

Sajidul Islam

Cart Expiration Per Product allows you to define how long each product can remain in a customer’s cart. Once the set time expires, the product is automatically removed.
Features 
* Set expiry time per product (minutes, hours, or days) 
* Global default expiry 
* Auto-remove expired items 
* Show or hide the countdown timer 
* Customer notice for removed items 
* Background cleanup with WP-Cron 
* Translation ready

Cart Expiration Per Product

Automatically remove WooCommerce cart items after a custom or global time period.

TIEdupedeleter Simple Duplicate Post Deleter vs Cart Expiration Per Product