SKDownloader is a torrent client & download accelerator. This plugin adds a "Download with skdownloader" context menu enabling users to start downloads directly from the browser.
For windows, the application location is read from a registry entry and in Linux, it will be a fixed location. For any url, the addon will invoke download_adder program and pass on the URL to it which will continue to download the file.
The Program for this extension is java based and open source and can be found here.
Program website - http://www.skdownloader.skipser.com
Source code - https://bitbucket.org/skipser/skdownloader/