GNU nano is a text editor designed to be user-friendly and easy to use. It is part of the GNU Project, and is distributed under the terms of the GNU General Public License. It is designed to be a lightweight and simple text editor, so it can be used on computers with limited memory and processing power. GNU nano has features such as syntax highlighting, soft line wrapping, multi-level undo/redo, search and replace, auto indentation, line numbers, and more. It also includes a "mouse-mode" for users who prefer to use their mouse for text editing. It is highly customizable and can be used for programming, writing documents, and more.
Notepad ++ is a GUI text editor, not a command line text editor.