Five more file managers were added: Sunflower, Marlin, SpaceFM, Ranger and FDclone. This overview now contains 25 file managers. Thank you for all the suggestions!
Dolphin | Homepage
Dolphin is the default file manager in KDE and it features an easy to use interface, tabs, previews, three view modes (icons, details, columns), vertical window splitting, file and folder sorting, service menus, tags, two-mode location bar.
sudo apt-get install dolphin