Command Prompt and Windows PowerShell are also simple and built-in options covered in this post for this purpose. We have already seen how to open a file or folder using Command Prompt or PowerShell.

To make Notepad files always open in a new or separate window in Windows 11, open Notepad setting and change the 'Opening files' option.

A CSV file is a simple text file that you can open in a wide variety of programs, including any program that works with plain text like the Notepad app.