GrandPlugins

Description 
The plugin allows to “Add To Cart” through AJAX without refresh in the single product page.
Features
<ul>
<li>The plugin works will all product types [ simple – variable – grouped ] in single page.</li>
<li>Display the messages after add to cart at the top of the product page.</li>
<li>
You can choose to enable / disable the AJAX feature by product type.
</li>
<li>
The plugin works with <a href="https://wordpress.org/plugins/quick-view-and-buy-now-for-woocommerce/" rel="ugc">Quick View and Buy Now For WooCommerce</a> for grouped products which have variable products linked into it.
</li>
</ul>
<a href="https://demo.grandplugins.com/ajax-single-add-to-cart-for-woocommerce" rel="nofollow ugc">Demo</a>
<a href="https://grandplugins.com/product/ajax-single-add-to-cart-for-woocommerce/" rel="nofollow ugc">Pro Version</a>
<ul>
<li>Enable | Disable the AJAX Add To Cart per product.</li>
<li>Choose to show | hide the “View Cart” link next to “Add to Cart” button after add to cart action.</li>
<li>Choose to redirect to a custom URL after Add to cart action.</li>
</ul>

Single Ajax Add to Cart For WooCommerce

Description The plugin allows to "Add To Cart" through AJAX without refresh in the single product page. Features The plugin works will al …

Codeless

Shop The Posts is a plugin created from Codeless that gives you the possibility to attach a product to each WP Post. 
So, if you have a small or a large one Blog Website, this plugin can help you to sell or just showcase products in blog posts. 
You can attach:
<ol>
<li>An External Product from an affiliate websit</li>
<li>Select a WooCommerce Product from your WP site</li>
</ol>
After the attachment, on each post (in the loop and single posts too) will be added this feature: 
1. In the Loop on Home Page or any loop element, will be added a small cart icon, that on mouseover will show the product attached 
2. In Single Posts will be added a fixed (sticky) part on the left/bottom of the page that will show the selected product.

Shop The Posts

Here is a short description of the plugin.  This should be no more than 150 characters.  No markup here.

Single Ajax Add to Cart For WooCommerce vs Shop The Posts