Jacob N. Breetvelt

The purpose of this plugin is to minimize page load time and resource usage by updating the page title and content only rather then reloading the entire webpage. 
The new contents and titles are fetched by ajax calls.
Restriction: 
As the rest of the page like header including all styles and scripts, footer and sidebars are not affected, you should only use this to switch between pages with the same overall layout and requirements.
You can enter shortcodes in the page content that will show up as a button or a text link. 
When activating the link, the pages title and content will be replaced by the title and content of the specified page.
There are four possible independant arguments to the shortcode: 
– page (required). This can be the page title or the page id. 
– text (optional). The button text or textlink text. 
– title-elm (optional). The title element id or class if it is not the default as entered on the settings page. 
– content-elm (optional). The content element id or class if not default.
Examples: [pla page=”Tet page”] [pla page=”5″ text=”Go to the testpage”] [pla page=”My Page” content-elm=”#my-div”]

Page Load Ajax

This plugin enables the use of shortcodes that create links to replace the current page content with the content of another page.

taisho

A light plugin that automatically updates cart page and mini-cart when product quantity is changed. Removes the default “Update cart” button. Optionally turns off cart page notices.
<h4>Features</h4>
<ul>
<li>Cart page and mini-cart widget are updated automatically on quantity change through Ajax (no page reloading).</li>
<li>“Update cart” button is removed from the cart page.</li>
<li>Both mouse and keyboard changes are supported.</li>
<li>Works for custom dropdown lists with ‘qty’ class.</li>
<li>Compatible with plugin <a href="https://wordpress.org/plugins/qty-increment-buttons-for-woocommerce/" rel="ugc">Qty Increment Buttons for WooCommerce</a>.</li>
<li>Uses the default WooCommerce cart update event.</li>
<li>Cart update is delayed by time in milliseconds since the last action affecting quantity, changeable in plugin settings, default 1000. It means that the update will fire only once when the customer is done with changes.</li>
<li>Optionally change min quantity in the cart from 0 to 1, on by default.</li>
<li>Optionally remove all notices from the cart page, on by default.</li>
</ul>

Ajax Cart AutoUpdate for WooCommerce

A light plugin that automatically updates cart page and mini-cart when product quantity is changed. Removes the default "Update cart" button …

Page Load Ajax vs Ajax Cart AutoUpdate for WooCommerce