KGet

KGet is the Download-Manager of KDE.

Features

Downloading files from FTP and HTTP(S) sources.
Pausing and resuming of downloading files, as well as the ability to restart a download.
Tells lots of information about current and pending downloads.
Embedding into system tray.
Integration with the Konqueror web browser.
Metalink support which contain multiple URLs for downloads, along with checksums and other information.