DiskWise is a native SwiftUI disk cleaner for macOS: node_modules, Xcode DerivedData, Docker volumes, app caches, leftovers. It measures real on-disk usage, not apparent size, and every row says what it is and what deleting it costs.
There is no delete code path: everything moves to the Trash and stays undoable until you empty it.
Free, open source, no telemetry, ~8 MB, 10 languages. Ships a CLI that doubles as an MCP server, so Claude Code can clean up for you.