nnn is a very fast file manager created to work seamlessly with desktop environments and GUI utilities. The ncurses based keyboard-driven terminal application should run smoothly on the Raspberry Pi, Termux on Android, Linux, macOS, BSD, Cygwin and WSL.
Besides basic file manager features (with tabs/contexts, bookmarks, search, and so on), the tool also various handy utilities like a disk usage analyzer (block/apparent), a fuzzy application launcher, batch renamer, and more. It's also extensible via a plugin system, and comes with many built-in plugins. For navigation, nnn supports navigate-as-you-type with directory auto-select. Search-as-you-type is also supported.
Other features include SSHFS mounts support, support for navigating using the mouse, batch operations on selections, multiple sorting options and a lot more.
Even though it comes with many features, the main nnn purpose is to be light and fast. See the Performance page from the nnn wiki for details.
nnn 2.8 was released recently (shortly followed by version 2.8.1 to fix an issue) with some cool new features. One of these features is session management support, which means you can save your current nnn session and restore it later. Press
U and you'll be prompted to save, load or restore a session.