Halo

See what's eating
your disk.

A beautiful, blazing-fast disk-space visualizer for macOS.

Download for Mac

Free & open source · macOS 26+ · Apple Silicon

Why Halo

Your whole disk, one glance.

Blazing fast

A fully parallel scanner walks every folder at once over one shared work queue — results stream into the donut live, in seconds.

Two lenses

Flip between by folder and by type — the donut and breakdown sidebar stay perfectly in sync as you drill in.

Reclaim space

Halo spots regenerable space — caches, node_modules, DerivedData — and reclaims it in one click, safely into the Trash.

Native & private

Pure SwiftUI, built for macOS 26. No telemetry, no accounts — your scan never leaves your Mac.

How it works

Scan. Hover. Reclaim.

Halo scanning a home folder, showing the usage donut and breakdown sidebar Halo scanning a home folder, showing the usage donut and breakdown sidebar
  1. 01

    Scan streams in live

    Pick a folder and watch the donut fill as the parallel scan completes each subtree — no waiting for the whole walk.

  2. 02

    Hover to explore

    Every arc is the folder or file type under your cursor. Click to drill in; the breakdown sidebar follows.

  3. 03

    Reclaim with one click

    Regenerable space is highlighted. Reclaim moves it to the Trash and the donut re-stitches instantly.