Sajjad Hossain

This plugin allows you to restrict your site users from uploading files of certain types and control the maximum file upload size. Administrator can select the file types and file upload limit by user role. This plugin restricts users from uploading unwanted files using the WordPress media uploader.
It is very simple to use. You will be able give permissions role wise. To restore WordPress’s default selection, just deactivate the plugin.
Any issue? Please let me know (http://sajjadhossain.com/contact-me/).

WP Upload Restriction

This plugin allows you to control upload of files based on file types and sizes.

wolkenkraft

This plugin integrates the popular Krumo class in you WordPress installation. Krumo helps developers to debug objects 
and variables. It presents debug output in a well formated and structured form.
After Installation simply try to debug some variables like this:
 
For detailed instruction visit my <a href="http://www.wolkenkraft.com/produkte/wordpress-plugins/krumo-debug-plugin" rel="nofollow ugc">wolkenkraft.com Website</a> 
or the <a href="http://krumo.sourceforge.net/" rel="nofollow ugc">Krumo Website</a>

wolkenkraft.com Krumo Debug Plugin

This plugin integrates the great Krumo class in WordPress which allows debugging of objects and variables in a
well formated and structured form.

WP Upload Restriction vs wolkenkraft.com Krumo Debug Plugin