Peter Westwood

This plugin allows you to configure extra mime-types for support by the inline-uploader.
A new options page is added as Options … Mime-types which allows you to add/delete the extra mime-types.
By default the following extra mime-types are registered: audio/ac3, audio/MPA and video/x-flv.
With version 0.90 of the plugin you are now able to upload a file containing a long list of mime types as an easy way to register multiple mime-types. 
The file format is “mime/type extension” for example like this:
<pre><code>audio/ac3 ac3
audio/MPA mpa
video/x-flv flv
</code></pre>

PJW Mime Config

This plugin allows you to configure extra mime-types for support by the inline-uploader.

Kushang Tailor

Now manage your Media files security with this plugin. This plugin is provide allow and disallow different upload file Mime types to the WordPress Media Library. In other words, Restrict the Mime types or extensions as per your wish.
Almost 96 extensions and Mime types are available.

Restrict WP Upload Type

This plugin is use for to allow and disallow different upload file Mime types to the Wordpress Media Library. Easy to use and flexible.

PJW Mime Config vs Restrict WP Upload Type