Ncdu

Not to be confused with NCDU.

ncdu (NCurses Disk Usage) is a disk utility for Unix systems. Its name refers to its similar purpose to the du utility, but ncdu uses a text-based user interface under the [n]curses programming library.^[3] Users can navigate the list using the arrow keys and delete files that are taking up too much space by pressing the 'd' key. Version 1.09 and later can export the file listing in JSON format.

NCurses Disk Usage
Developer(s)	Yoran Heling
Initial release	February 21, 2007; 18 years ago (2007-02-21)[1]
Stable release	2.7[2]  / 19 November 2024; 8 months ago (19 November 2024)
Repository	g.blicky.net/ncdu.git
Written in	C (version 1.x), Zig (version 2.x)
Operating system	Linux, BSD, UNIX
Platform	POSIX
Type	Disk utility
License	MIT License
Website	dev.yorhel.nl/ncdu

ncdu was developed by Yoran Heling to learn C and to serve as a disk usage analyzer on remote systems over ssh. Version 2.0 of the program brought a full rewrite in the Zig programming language.^[4]