Vitor Carvalho

Add functionalities for your media library:
<ul>
<li>Organize media files with categories</li>
<li>Add PDF and Document mime types support</li>
<li>Adjust JPEG quality percentage (from 0 to 100) thus increase image quality</li>
<li>Crop and resize uploaded images</li>
<li>Add more file types support (documents, spreadsheets, video, audio, flash, ZIP (packages) and more image types)</li>
<li>Support for PDF and all type of documents organization</li>
</ul>
Common Supported file extensions:
<ul>
<li>Images: jpg, jpeg, png, gif, tiff, wpmb, svg, swf (flash)</li>
<li>Documents: pdf, doc, docx, wri, rtf, xls, xlsx, ppt, pptx, and all OASIS OpenDocument standard extensions</li>
<li>Text: txt, csv, plain, HTML, XML, CSS, …</li>
<li>Video: asf, wmv, avi, mov, qt, mpg, mpeg, mp4, …</li>
<li>Audio: mp3, m4a, ra, ram, wav, ogg, midi, wma, …</li>
<li>Packages: zip, rar, 7z, iso, img, tar, gz, deb, rpm, …</li>
<li>Generic: mo, po, fla, ttf, woff, bmp, ico, …</li>
</ul>
Just install this plugin and adjust to your needs.
<h4>Provided Custom Hooks</h4>
This plugin provides 2 custom filters:
1) Change labels and other arguments passed to register_taxonomy function: 
 add_filter( ‘media_category_args’, ‘my_media_category_args’ );
2) Hooks inside the category postbox HTML used to edit individual file information: 
 add_filter( ‘media_category_html’, ‘my_media_category_html’ );
The use of these hooks are recommended, thus, if the plugin gets deactivated, those hooks will not be called anymore and then you get things consistent and clean.
Do you want to translate it to your language? Just reply to the «Translations» topic in the forum.

Media Features

Adds category organization, file type filter/browser, uploaded image resize, crop and JPEG quality controllers.

freefeatures

The FreeFeatures plugin allows you to effortlessly search for, preview, and download FreeFeatures content (articles/recipes/reviews/pictures) into your WordPress for use on your website.
In order to use this plugin, you will need a freefeatures account and an active subscription. You can register for an account and purchase a subscription directly within the plugin

FreeFeatures

Download professionally edited FreeFeatures content and use on your WordPress site

Media Features vs FreeFeatures