LordPretender

<p>This plugin allow you to add files into your media library without having to upload them. So, you will be able to share, for example, your files into your Google Drive.<br />
This also save you steps to download the image to local computer and upload again to your own WordPress.</p>
<h4>Features</h4>
<ul>
<li>Automatically downloads and adds the file to the media library.</li>
<li>After the uploading is successful, you are redirected to the edit screen</li>
<li>A new dropdown list is available in the media library to let you display only uploaded files, not uploaded files, …</li>
</ul>


Add Media from URL

large chunks of code taken from the much better original here:

https://en-au.wordpress.org/plugins/lh-add-media-from-url/

IMO it unethical to use this plugin

A crappy clone of the original

Let you add media files into your media library without having to upload them.

Alex Moss

<p>This plugin lets you easily add the LPocket Read it Later Button to your WordPress blog via a shortcode.</p>
<p>Simply install the plugin and insert the shortcode where you want. You can also hardcode the shortcode into your theme templates.</p>
<ul>
<li><a href="http://3doordigital.com/wordpress/plugins/getpocket-read-it-later-button/" rel="nofollow ugc">Read it Later Button</a> Plugin homepage.</li>
<li>More <a href="http://3doordigital.com/wordpress/plugins/" rel="nofollow ugc">WordPress Plugins</a>.</li>
</ul>


Pocket Read it Later Button

This plugin lets you easily add a Pocket Read it Later button to your WordPress blog via a shortcode.

Add Media from URL vs Pocket Read it Later Button