AudioMass

Description

AudioMass is a free, open-source audio and waveform editor that runs entirely in your browser - no sign-up, no backend, and no plugins needed. Users can drag and drop or record audio, then zoom, pan, and edit visually using tools for trimming, cutting, pasting, inverting, reversing, and more. The tool comes loaded with effects like compression, normalization, reverb, delay, distortion, pitch shifting, and fade-in/out. It supports undo/redo, visual frequency analysis, and exports in MP3 or WAV - all in just ~65 KB of JavaScript, with offline support built-in.

Screenshots