uGet is a free and open source download manager. Here's how you can install it in Ubuntu 13.10.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
sudo apt-add-repository ppa:plushuang-tw/uget-stable
sudo apt-get update
sudo apt-get install uget aria2
uGet is an Open Source download manager application for GNU/Linux developed with GTK+.
FireFox Integration via FlashGot.
Computer Shutdown After Completion.
Advanced Download Categories: unlimited categories to manage downloads.
HTML File Importing: import a list of an unlimited amount of URLs to download from via a .html file.
TXT File Importing: import a list of an unlimited amount of URLs to download from via a .txt file.
Speed Limit Control: control the maximum Upload & Download speeds that uGet should utilize per download or per category.
CLI / Terminal Usage Support: ability to use a command line or terminal to download files.
Batch Downloads: allows the user to add an unlimited amount of files at one time to the queue for downloading.
Multi-Protocol: support for downloading files through HTTP, HTTPS, FTP, BitTorrent* & Metalink*
FTP Login & Anonymous FTP: supports downloading from anonymous FTP as well as login support via Username & Password for private/protected FTP servers.
Quiet Mode: allows downloads to be added to a specific category automatically and begin downloading automatically.More at Noobs Lab
Additional resources for uGet