disktree

disktree shows what's filling your disk as a treemap: every folder a colored tile sized by the space it takes, grouped by kind of data (code, caches, toolchains, media, git, AI agent scratch). Mark what you don't need, review the list, and send it to the trash. Built by Shopify's Tobi Lütke. MIT.

It's Rust, drawn on the GPU, and quick. It started as a tool for Omarchy, DHH's Linux desktop setup, but now ships builds for Linux, macOS and Windows. On git checkouts it warns about uncommitted, stashed or unpushed work before you delete anything, which is the feature that actually saves you. The macOS builds may need a Gatekeeper override to open.

Developers whose disks fill up with node_modules, Docker layers and model downloads: this is the nicest way to find them. dust is the command-line version; WizTree and DaisyDisk are the closed-source options on Windows and Mac.

The catch: Delete permanently really is rm -rf. It always asks first, but trash is the default for a reason, so leave it there.