These are Unix and Linux text editor programs.

vi text editor is a standard text editor found in almost every flavor of Linux, it is the most preferred text editor by most Linux professionals, other text editors include nano and pico are also decent substitutes for the vi editor

Different users have different opinions about what the best text editor is. Believe it or not, this was a major flamewar topic throughout the 80s and early 90s. Vi, Vim, eMacs, and nano are all popular choices for command-line text editors. There isn't as much flaming in the GUI arena, but there is an even larger array of choices there.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Use a text editor, like Notepad.

Vim is just one of many text editors. I prefer nano which is more basic and simpler to use than vim. It is all a question of preference.