There are many alternatives to ncdu for Mac if you are looking for a replacement. The best Mac alternative is DaisyDisk. It's not free, so if you're looking for a free alternative, you could try JDiskReport or Space Radar. If that doesn't suit you, our users have ranked more than 25 alternatives to ncdu and ten of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to ncdu are GrandPerspective (Free Personal, Open Source), crossdirstat (Free, Open Source), Disk Analyzer Pro - Disk space management software (Paid) and Duc (Free, Open Source).
With DaisyDisk you can free up disk space by quickly finding and deleting big, useless files. The program scans any mounted disk and displays it on the sunburst map, where segments mean files and folders, proportionally to their sizes. The map is easy to read and navigate.
GrandPerspective is a small utility application for Mac that graphically shows the disk usage within a file system. It can help you to manage your disk, as you can easily spot which files and folders take up the most space.
Free open-source cross-platform file & directory statistics as found on Github - Generate a directory tree for any given folder - View any folder as colored rectangles (squarified algorithm) - Customize the rectangle colors and show statistics about filetypes - Export...
Disk Space Analyzer allows you to easily find and remove the bulkiest content for your Mac or external storage. You can see your Mac disk usage, find folders that take up the most space, and manage hard drive space by moving or removing files.
Disk Inspector is a utility that allows you to locate "space eaters" - big files and folders saved on disks in your Mac. Do you have any finishing free space on your disk? Thinking about buying a new disk?
Pretty fast disk usage analyzer written in Go. Gdu is intended primarily for SSD disks where it can fully utilize parallel processing. However HDDs work as well, but the performance gain is not so huge.