Wavesurfer.js

Wavesurfer.js is an open-source audio visualization library for creating interactive, customizable waveforms.

howler.js

JavaScript audio library for the modern web

ffmpeg.wasm

ffmpeg.wasm is a pure WebAssembly / JavaScript port of FFmpeg enabling video & audio record, convert and stream right inside browsers!

node-fluent-ffmpeg

A fluent API to FFMPEG

arthenica/ffmpeg-kit

FFmpeg Kit for applications. Supports Android, Flutter, iOS, Linux, macOS, React Native and tvOS. Supersedes MobileFFmpeg, flutter_ffmpeg and react-native-ffmpeg.