selector is a command line utility for dynamic string selection. As you type a list of substrings separated by ";" or a regexp, the display is updated in real time to show only the matching lines. The main usage of selector is as an efficient search in the shell command history. With the correct option, it will inject the selected line into the terminal input buffer, allowing the user to edit the line and execute it as a standard command.
pfm is a terminal-based file manager written in Perl. All pfm commands can be invoked with one- or two-key commands. It features integration with version control systems, use of the ReadLine library for friendly command line editing, support for executing user-defined commands, colored filenames according to extension or type, a single-file and multiple-file mode, and bookmarks for directories.