SKDownloader is a free download accelerator for Linux, windows and other platforms. It is java based and has special installers for Windows.
Features:
* Downloading the same file in parts simultaneously to maximize speed.
* Pause/Resume Supported.
* Supports redirection.
* HTTP and FTP support.
* Proxy support.
* Scheduling support.
* Internet Explorer and Firefox integration.
* Auto updater for both Linux and Windows
* Graphical and Command line versions available with Graphical version having command line interface inbuilt.
* Easy installers for Linux and Windows.
Homepage - http://www.toolsbysk.com/skdownloader/