paulgpetty

Outputs all of your active plugins via PHP for use in page templates & more.
And also includes the ability to broadcast the theme on your site.
Just call:
<pre><code><?php wp_list_all_active_plugins(); ?>
</code></pre>

WP Plugin Lister

Outputs all of your active plugins via PHP for use in page templates & more.

Pat Hawks

dirtysuds

Will embed a PDF file using Google Docs Viewer 
Simply include the URL for a PDF document on it’s own line, or wrapped in the embed tag like <code>[embed]http://example.com/file.pdf[/embed]</code> and the plugin will embed the PDF into the page using the Google Docs Viewer embed code. 
The url must end with <code>.pdf</code>
Supported attributes in the embed tag are <code>class</code> <code>id</code> <code>title</code> <code>height</code> and <code>width</code>

Embed PDF

Adds pseudo oembed support for PDF documents

WP Plugin Lister vs Embed PDF