Babar

Take a snapshot of a website and embed it on your blog post on the fly. No need any screen capture tools, no need any coding. 
Just insert the shortcode, and snapshot will be embed automatically on your post.
Here is an example: <code>[snap url=http://example.com alt="This snapshot has taken by Snap A Site"]</code>
For more details reffer to the User Manual part of the readme.txt file or find <a href="http://en.ibabar.com/snap-a-site#manual" title="Find the user manual of Snap A Site on my blog" rel="follow nofollow ugc">Snap A Site user manual</a>
Still searcing for something? Just drop a message @ <a href="http://en.ibabar.com" title="Use the contact form on my blog" rel="follow nofollow ugc">My Blog</a>
<h3>User Manual</h3>
It’s easy. Just insert this shortcode in your post: [snap url=http://example.com]
Supported parameters for [snap]
<ul>
<li>url – URL of the site to take snapshot</li>
<li>alt – For image alt</li>
<li>h – For imahe height</li>
<li>w – For image width</li>
<li>alt – For image alt</li>
<li>h – For imahe height</li>
<li>w – For image width</li>
<li>title -For link title</li>
<li>target – For link target</li>
<li>rel – For link rel</li>
<li>link – For linking to other site</li>
</ul>
Have further question? Let me know. Just drop a message @ <a href="http://en.ibabar.com" title="Use the contact form on my blog" rel="follow nofollow ugc">My Blog</a>

Snap A Site

The easiest way to take and embed snapshot of a site on Wordpress blog.

Francis

The aim of this plugin is to display a thumbnail when hovering over a link in the blog posts.
Thumbnails are generated by the Apercite service ( http://www.apercite.fr/en/ ). The thumbnail is generated in 20 seconds. 
You can choose the thumbnail size between 19 predefined sizes. You also have the ability to enable or disable JavaScript and Java when generating the thumbnail.
If you have a valid subsciption to the Apercite service, you can fill in you login and API key to request the update of the thumbnails. To do so, you need to tick the box in the edition interface of each post.
Feel free to contact me if you need help in finding the appropriate CSS attributes to display the thumbnails on your blog (don’t forget to mention the blog URL).

Apercite

The aim of this plugin is to display a thumbnail when hovering over a link in the blog posts.

Snap A Site vs Apercite