SoundTool — free, browser-based audio toolkit with 61 tools and 12 playable virtual instruments. AI voice cloning, speech-to-text, text-to- speech, AI noise removal, hum-to-instrument, vocal tuner + trim, merge, convert, EQ, reverb, BPM and more. Every instrument records and exports WAV — no account, no upload, 100% client-side. 14 languages. Built by a solo developer on the Web Audio API. Zero data collection: your audio never leaves the browser.