Thoog_10

Rather than embedding video after video on a page or post, this plugin allows the user to consolidate those video embeds into a list that plays within one div.
<ul>
<li>This lets the user keep all their video embeds in one place, the Async Vid List settings page.</li>
<li>The presentation is more aesthetically pleasing to the viewer.</li>
<li>Only the video that is clicked on is loaded.</li>
</ul>
Multiple lists can be used on any page or post (or even sidebars) using the shortcode and the list ID.
The CSS is intentionally kept simple – feel free to customize it per your theme.
This plugin only uses one row in the wp_options table, so there is no database bloat.

Async Vid List

Lets the user create lists of video embeds that load and play asynchronously in one div

Paris Holley

This plugin is meant to be a drop-in to your wordpress installation with no additional configuration. The goals/features of this plugin are:
<ul>
<li>Load javascript files in an asynchronous manner to improve time to DomReady/OnLoad</li>
<li>Use existing wordpress APIs for backwards compatability and prevent coupling to this plugin</li>
<li>Leverage dependency model wordpress provides for assets to improve loading performance</li>
</ul>
Please submit bugs or contributions to the github location and not here on wordpress’ system:
https://github.com/parisholley/wordpress-asynchronous-javascript/
SEO: async js, asynchronous js, async javascript
<h3>Incompatibility</h3>
This plugin will not work out the box with the following plugins (unless they are modified to support asynchronous loading).
<ul>
<li>Jetpack by WordPress.com (social plugin)</li>
<li>WP Most Popular</li>
</ul>

Asynchronous Javascript

Improve page load performance by asynchronously loading javascript using head.js

Async Vid List vs Asynchronous Javascript