Download Manager
A download manager is a computer program designed to download files from the Internet, unlike a web browser, which is mainly intended to browse web pages on the World Wide Web (with file downloading being of secondary importance). According to http://en.wikipedia.org/wiki/Download manager.
Download Manager Features:

Pausing the downloading of large files.
Resuming broken or paused downloads (especially for very large files).
Downloading files on poor connections.
Downloading several files from a site automatically according to simple rules (file types, updated files, etc. – see also Offline Browser).
Automatic recursive downloads (mirroring).
Scheduled downloads (including, automatic hang-up and shutdown).
Searching for mirror sites, and the handling of different connections to download the same file more quickly (Segmented downloading).

Download Manager for Ubuntu Edgy Eft
You can install these following packages that can be use as download manager for Ubuntu Edgy Eft.
Wget
Wget is a network utility to retrieve files from the Web using http(s) and ftp, the two most widely used Internet protocols. It works non-interactively, so it will work in the background, after having logged off. The program supports recursive retrieval of web-authoring pages as well as ftp sites — …

Ubuntu 6.10 Edgy Eft has been released on 26th October 2006 with many exciting new features. Canonical Ltd, the commercial sponsor of Ubuntu, the world?s fastest growing Linux distribution, announced its latest desktop and server version. Following months of development and user feedback, Ubuntu 6.10 offers a cleaner, sharper design, together with new and enhanced desktop applications and advances in security. Significantly faster boot up times and the best in leading edge free software technologies make the latest Ubuntu the first choice for many new and existing Linux users.
New Features
The desktop version introduces a host of new features, an improved interface and a wide variety of new applications and desktop tools making Ubuntu 6.10 flexible and user-friendly. Enhancements include:

Tomboy, an easy-to-use and efficient note-taking tool
F-Spot, a photo management tool that enables tagging, photo editing and automatic uploading to on-line web management sites such as Flickr
GNOME 2.16, which in addition to new features such as enhanced power management, makes the GNOME desktop more secure, faster and more stable
Upstart, a replacement start-up manager offering a cleaner design, eye-catching effects and a substantially …