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://.
KBackup is a program that lets you back up any directories or files. It uses an easy-to-use directory tree to select the things to back up. The program was designed to be very simple to use so that it can be used by those who are not computer experts. The storage format is the well known tar format, compressed with bzip2 or gzip. It also includes German, French, Italian, and Russian translations for the user interface and English and German translations of the handbook.
KDE Disk archiver is a disk-based archiving and backup utility. It can perform differential backups, which means that it can quickly store the differences between a recent full backup and the current state of your data. An archive browser easily allows you to view the "table of contents" of your archive. A sophisticated file filtering mechanism allows you to select which files and directories to backup or restore, and which files to compress. The table of contents can be extracted from the archive and used as a reference when making differential backups, which means you don't need your archive CDs handy to do a differential backup of the entire filesystem.