DiskScour

A fast, native macOS disk analyzer that finds — and reclaims — the gigabytes of build junk on your dev machine.

---

The problem

Your disk fills up and you have no idea where it went. On a dev machine the answer is almost always regenerable build caches — node_modules, Rust target/, .next, DerivedData, .gradle — scattered across dozens of projects and git worktrees. They add up to tens of gigabytes you can delete and recreate any time, but Finder won't show you that, and du won't tell you which ones are safe to nuke.

DiskScour scans a folder in seconds, shows you exactly what's eating the space, and lets you move the regenerable caches to the Trash in one click.

Demo

Point it at a folder and it tells you how much is reclaimable — here, 59.8 GB of 62.3 GB is just build caches, grouped by ecosystem and safe to delete:

Browse what's actually there as a tree (sorted biggest-first) or a treemap — click to drill in, hover for details:

Caches are matched in context (a target/ only counts next to a Cargo.toml, etc.) and nested caches are de-duplicated, so the "reclaimable" number is honest. Selected items go to the macOS Trash — recoverable, never a hard delete, always behind a confirmation.

Run it

Needs a Rust toolchain.

git clone https://github.com/pathorsAI/diskscour
cd diskscour
cargo run --release

Prefer a double-clickable app in your dock? Build DiskScour.app:

cargo install cargo-bundle --locked
cargo bundle --release   # → target/release/bundle/osx/DiskScour.app

Terminal one-liner

No window, just the numbers:

diskscour scan ~/Github

License

MIT © Pathors