KMAGO (MAnager of Get Operations) is a KDE-based download manager. It features drag and drop operations, group management of transfers, control of multiple downloads with priority and selectable priority policy, resume capability check, full configurability, and the ability to choose different programs for use as a downloading backend.
Krusader is an advanced twin-panel (commander-style) file-manager for KDE 3.x, but with many extras. It provides all the file-management features you could possibly want. It also features extensive archive handling, mounted filesystem support, FTP, an advanced search module, a text viewer/editor, directory synchronization, support for file content comparisons, powerful batch renaming, and much more. It supports the following archive formats: tar, zip, bzip2, gzip, rar, ace, arj, and rpm. It can also handle other KIOSlaves such as smb:// or fish://.