Klack – Satisfying sound with every keystroke
For an open source alternative, try Bucklyspring: it runs on linux, mac and windows. All Klack's marketing lingo even applies as well: High fidelity sound, Immersive spatial audio, Instant type feedback, Up/down keystrokes.Debian/ubuntu users: sudo apt install bucklespring
all others: https://github.com/zevv/bucklespring