Apps similar to DiskUsage include WinDirStat, which is free and open source. Other options are WizTree, Baobab Disk Usage Analyzer, SD Maid SE and TreeSize. Disk Usage Analyzers like DiskUsage are a crowded field, with more than 50 alternatives for Windows, Mac, Linux, Android and the web.
Native macOS disk analyzer that scans folders and space, presenting file-type treemaps or ring charts beside a Finder-style outline. It can reveal items, send them to Trash after confirmation, flag caches and build output, and offer an optional read-only JSON CLI.
Canada
DiskFox is a Mac storage app that keeps a history of your disk, so it can show what grew, when and the likely cause.
United Kingdom
