Mark / t31os

Adds an additional dropdown menu to the post listing(also works for other post types that support post formats) to filter by post format.

Post Format Filter

Filter posts by post format, also supports custom types.

GSaraiva

Create a better display of codes on your page/blog. 
For everybody that publish examples, source-code and some tips about a specific language. 
This plugin do use of GeSHi highlight system, so you will have support for more then 110 languages, including PHP, ASP, Html, JavaScript, CSS, Java, Python, Delphi, C++, C, Visual Basic and much more.
New features:
<ul>
<li>Non-obstructive filter integration.</li>
<li>Syntax highlighting with Style attribute enabled.</li>
<li>Syntax highlighting using AJAX.</li>
<li>Syntax highlighting in RSS 2.0 feeds.</li>
<li>Syntax highlighting with PRE tags .</li>
<li>Syntax highlighting in comments.</li>
<li>Start line number configuration.</li>
<li>Hide toolbar for a code block.</li>
<li>CSS !important to for better style.</li>
<li>New code theme (Summer)</li>
</ul>

Developer Formatter

Create a better display of codes on your page/blog.

Post Format Filter vs Developer Formatter