1. Midnight Commander
In Midnight Commander (MC), arrow keys control file selection, the insert key is used to select files and the Function Keys perform operations such as renaming, editing and copying files. It also supports mouse operations.
Midnight Commander's features include multiple file renaming (using wildcard characters), the ability to view the contents of RPM and DEB package files, to work with common archive formats as if they were simply another directory, an editor called mcedit and to function as an FTP or FISH client.
Mcedit seems really useful and it can be executed as standalone program or from Midnight Commander using F4 key. mcedit's features include syntax highlighting for many languages, macros, code snippets, simple integration with external tools, automatic indentation, mouse support, clipboard and more.
If you want to try Midnight Commander (and learn more about it), download it from HERE. Ubuntu users can install it by simply running the following command in a terminal:
sudo apt-get install mc
2. Last File Manager
To download Lfm and learn how to use it, see it's HomePage. Ubuntu users can install Last File Manager using this command:
sudo apt-get install lfm
3. Vifm
You can set Vifm to either a 1 pane or 2 pane view, with the 2-pane view being able to serve either as two different classic panels, or one of the panels being used as quick file properties viewer (you can set quick file views in the pane with the :view command or view full screen file info with Ctrl + g).
For those who never used Vim, Vifm lets you cut with dd, paste with p, and rename a file with cw. Movement keys are the standard hjkl, with h and l ascending and descending the directory tree.
In the vifmrc configuration file you can set up your own commands and define simple rules regarding file types and the program to open them.
For more info on using Vifm, after installing it, type ":help" (you will also need vim installed).
Download Vifm from HERE. Ubuntu users can install Vifm using the following command:
sudo apt-get install vifm vim