Four Nodes

Simple plugin to display random posts on your wordpress blog. Plugin provides a widget to display random posts in sidebar. 
Also comes with a shortcode [randomposts] to include on pages.
<ul>
<li>Easy to install</li>
<li>Picks Random Posts</li>
<li>Ability to select from specific category</li>
<li>Limit number of posts</li>
<li>Shortcode support</li>
</ul>

FourNodes Random Post

Displays Random wordpress posts in a sidebar widget. Also, provides shortcode to display random posts on pages.

UspDev

Is a plugin where you can display the number of popular posts, latest and random post with thumbnail image on your sidebar or page/post using short code. 
 
Feature : 
– Random post, Popular Posts and Latest posts 
– Thumbnail image, support 3rdparty source image 
– Widget ready 
– Short code support 
– Tabview menu with jQuery

Sup Post Widget

Is a plugin where you can display the number of popular posts, latest and random post with thumbnail image on your sidebar or page/post using short co …

FourNodes Random Post vs Sup Post Widget