TreeSize for Mac: A Native Alternative Built for macOS

What people usually mean by “TreeSize for Mac”

The useful TreeSize pattern is straightforward: scan a volume, sort the directory tree by size, visualize distribution, and follow the largest branch. Storage Map keeps that evidence-first workflow while using a native SwiftUI interface and a Rust scanner designed around macOS.

Where the products differ

• Platform: TreeSize is a Windows product; Storage Map targets Apple Silicon Macs running macOS 13 or later
• Filesystem focus: TreeSize emphasizes Windows, NTFS, reporting, and administrative storage management; Storage Map focuses on APFS layout, firmlinks, hardlinks, sparse files, and macOS privacy boundaries
• Visual workflow: both use hierarchical size information and treemaps; Storage Map keeps the map and folder navigation in one modern Mac interface
• Background awareness: Storage Map adds menu-bar free capacity and a local 90-day history
• Terminal use: the Direct Edition includes a keyboard-driven CLI powered by the same scanner core

What Storage Map deliberately does not imitate

TreeSize Professional serves reporting, search, export, and enterprise administration needs that go far beyond a personal Mac cleanup session. Storage Map is narrower: understand one Mac accurately, watch its capacity, and reclaim space with explicit safety guardrails.