Devendra Pali

WC Quantity Style replaces the default WooCommerce quantity input arrows with separate plus and minus buttons. The controls inherit your theme styling by default and can be customized from the plugin settings.
Features:
<ul>
<li>Separate plus and minus quantity controls</li>
<li>Inherits theme styling by default</li>
<li>Customizable appearance from the admin settings</li>
</ul>

WC Quantity Style

Replace default WooCommerce quantity arrows with separate plus and minus buttons that inherit your theme styling.

bhavik.kiri

navonmeshsolution

This lightweight plugin enhances the WooCommerce checkout experience by enabling quantity updates and product removal options directly on the checkout page.
<h4>Key Features</h4>
Quantity Management: Add WooCommerce standard quantity fields directly on the checkout page. 
Product Removal: One-click product deletion from checkout. 
Dual Compatibility: Supports both Classic and Block-based WooCommerce checkout. 
Seamless Integration: Uses native WooCommerce styling and functionality. 
Mobile Friendly: Responsive design that works on all devices.
Note on Compatibility: This plugin works with the default WooCommerce quantity input. If your theme replaces or customizes the quantity selector (e.g., with plus/minus buttons), the functionality may not work as expected.
<h4>Important Compatibility Note</h4>
This plugin is designed to work exclusively with the standard WooCommerce Checkout page (including the new Checkout Blocks and the Classic shortcode). It is not compatible with custom checkout pages built using third-party page builders like:
<ul>
<li>
Elementor (WooCommerce Builder)
</li>
<li>
Divi BodyCommerce
</li>
<li>
WooLentor / CoBlocks
</li>
</ul>
<h4>Perfect For</h4>
<ul>
<li>Stores wanting to reduce checkout abandonment.</li>
<li>Improving user experience by removing the “back to cart” step.</li>
<li>Modern WooCommerce stores using block-based checkout.</li>
</ul>
<h3>Upgrade to Pro</h3>
Need better compatibility with custom themes or advanced filtering options?
Upgrade to Change Quantity on Checkout Pro for:
<ul>
<li>Advanced Compatibility: Works with themes that use custom plus/minus quantity buttons.</li>
<li>Category Filters: Choose exactly which product categories show quantity selectors.</li>
<li>Premium Support: Get faster response times and direct technical assistance.</li>
<li>AJAX Updates: Faster, refresh-free experience for your customers.</li>
</ul>
<a href="https://www.navonmeshsolution.com/product/cqoc-pro/" rel="nofollow ugc">View Pro Version Features »</a>
<h3>Support</h3>
For support, feature requests, or bug reports, please visit <a href="https://wordpress.org/support/plugin/change-quantity-on-checkout-for-woocommerce/" rel="ugc">Support</a>.

Change Quantity on Checkout for WooCommerce

Works like a charm. Should be part of WooCommerce.

Does what it says on the tin!

Allow customers to change product quantities and remove products directly from both Classic and Block-based WooCommerce checkout pages.

WC Quantity Style vs Change Quantity on Checkout for WooCommerce