nerdywp

This plugin will let you hide out of stock products in WooCommerce but only for certain categories. WooCommerce currently lets you either hide all out of stock products or none. This expands on that and lets you choose a category to hide when out of stock.
You might want to use this to keep newer products on your website eventhough they’re out of stock. Hiding the older, out of stock WooCommerce products would remove some clutter.

Hide Out Of Stock By Category

An easy and simple way to hide products in WooCommerce by category when they're out of stock

xootix

<a href="http://demo.xootix.com/waitlist-for-woocommerce/" rel="nofollow ugc">Live Demo</a>
Waitlist for woocommerce lets you track demand for out-of-stock items, ensuring your customers feel informed, and therefore more likely to buy.
<a href="https://wordpress.org/plugins/waitlist-woocommerce/faq/" rel="ugc">How to translate?</a>
<h3>Features And Options:</h3>
<ul>
<li>Notify customers via email when an out-of-stock item becomes available for purchase.</li>
<li>Track users list and quantity.</li>
<li>Two templates design – Popup & Inline form</li>
<li>Email Log</li>
<li>Enable/Disable guest users.</li>
<li>Customizable Waitlist Form fields</li>
<li>Shortcode to generate waitlist button/form anywhere</li>
</ul>
<h3>Add-ons:</h3>
<ul>
<li>
<a href="http://xootix.com/plugins/waitlist-for-woocommerce#sp-addons" rel="nofollow ugc">Custom Form Fields</a> – Add extra fields to the waitlist form to collect additional data from users. Customize these fields and change the form’s appearance from the ‘Fields’ page
</li>
<li>
<a href="http://xootix.com/plugins/waitlist-for-woocommerce#sp-addons" rel="nofollow ugc">Email Booster</a> — Send a notification email to the customer and the admin (or a specified email address) when someone joins the waitlist.
</li>
<li>
Auto send “back in stock email” when stock status is updated to “in stock”
</li>
<li>
<a href="http://xootix.com/plugins/waitlist-for-woocommerce#sp-addons" rel="nofollow ugc">Export/Import Waitlist</a> – Easily export and import waitlist users and their data into a CSV or Excel file
</li>
<li>
<a href="http://xootix.com/plugins/waitlist-for-woocommerce#sp-addons" rel="nofollow ugc">Notify on Phone</a> – Send a text message to users whenever a product arrives back in stock.
</li>
</ul>

Waitlist Woocommerce ( Back in stock notifier )

Good support in premium version

We have purchased the premium version and everything is working great. We have had to adapt several things in our functions.php and have received fast and efficient support.

Very good at the moment

Good support in premium version

Do not miss customers if your product is out of stock, inform them as soon as product arrives in stock

Hide Out Of Stock By Category vs Waitlist Woocommerce ( Back in stock notifier )