vifm is a curses-based file manager with vi like keybindings.
Link: vifm
CLI tool to keep track of regularly used commands and snippets.
Link: kitt
fzf is a general-purpose command-line fuzzy finder. It’s a fuzzy finder for files, buffers, history, processes, git commits, etc. It’s also a customizable command-line launcher.
Link: fzf
btop is a cross-platform, highly customizable, resource monitor, process viewer and process manager for Linux, macOS and FreeBSD. Also support vim keybindings for navigation.
Link: btop