Czkawka
Multi functional app to find duplicates, empty folders, similar images
Czkawka (Polish for “hiccup”) is a lightning‑fast, multi‑purpose file cleaning tool written in Rust. It helps users declutter storage by finding duplicate files, similar images or audio, empty folders, and unusually large files through CPU‑efficient multithreading. Available with both GUI (GTK‑based) and CLI versions for flexible usage.