WP-Filebase Download Manager for WordPress

WP-Filebase is a WordPress download manager supporting file categories, thumbnails and more. Uploaded files can be associated with a post or page so the download URL, thumbnail and other file information are appended automatically to the content. Additionally the downloadmanager offers options to limit traffic and download speed.

Features:

Powerful filemanger to arrange files in categories and sub-categories
Insert file lists in posts and pages (with Editor Button)
Flexible content tags
Automatically creates thumbnails of images (JPEG, PNG, GIF, BMP)
Category Icons
Upload files with your browser or FTP client
Powerful template engine (variables, IF-Blocks)
Associate files to posts and automatically attach them to the content
Customisable file list widget
Multiple custom templates for filelists
Access control for categories and files (e.g. to make files accessible for members only)
Hotlinking protection
Daily and monthly traffic limits
Download speed limiter for registered users and anonymous
Traffic and download limits
Range download (allows users to pause downloads and continue them later)
Works with permalink structure (nice download URIs)
Download counter which ignores multiple downloads from the same client
Many file properties like author, version, supported languages, platforms and license
Custom JavaScript code which is executed when a download link is clicked (e.g. to track downloads with Google Analytics)
Works with WP Super Cache

Download: http://wordpress.org/extend/plugins/wp-filebase/