Krusader

KDE users have for a long time had the jack-of-all-trades, all-singing-all-dancing Konqueror for file management. In KDE 4 we’ll be joined by the new Dolphin which will be the default file manager. If you yearn for a change of file manager now, however, and you’re a fan of the left-right split in your file manager, you might just like Krusader. On first run, Krusader will search your system for tools it can integrate with as you can see here.