pjgalbraith

Automatically display a default Post Thumbnail image, either the first image attached to a post, or set default images for specific categories, tags, or custom taxonomies. Supports custom fields to ease upgrading.
Includes the SLT File Select plugin created by gyrus (http://www.babyloniantimes.co.uk/index.php?page=donate)
<h3>Documentation</h3>
See documentation at http://www.pjgalbraith.com/2011/12/default-thumbnail-plus/

Default Thumbnail Plus

Add a default thumbnail image to post's with no post_thumbnail set.

communitycom

This plug-in is an integrated plug-in with a variety of features that make it powerful your web site.
[ Powerful　Widgets ]
<ul>
<li>Recent Posts – display the link text and the date of the latest article title.</li>
<li>FB Page Plugin – display the Facebook Page Plugin.</li>
<li>topic area – display the topic area.</li>
<li>Contact widget – display contact area.</li>
</ul>
[ Social media ]
<ul>
<li>Print OG Tags</li>
</ul>
[ Others ]
<ul>
<li>Print Google Analytics tag</li>
<li>Print meta keyword tag</li>
<li>Print meta description tag</li>
<li>Set Default Thumbnail</li>
<li>Set Favicon</li>
</ul>
and more.

Saitama Addon Pack

This plug-in is an integrated plug-in with a variety of features that make it powerful your web site.

Default Thumbnail Plus vs Saitama Addon Pack