nowfound

Dev tools · alternatives · 2026

24 alternatives to Audiomass – a free, open-source multitrack audio editor for the web

AudioMass is a free full-featured web-based audio & waveform editing tool

Audiomass is a free, open-source multitrack audio editor that runs in a web browser. It allows users to record, edit, and mix multiple audio tracks without installing software. The tool is designed for anyone needing… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1
  2. 2WD
  3. 3

    Hey HN! Braden here, creator of Whispering, an open-source speech-to-text app. I really like dictation. For years, I relied on transcription tools that were almost good, but they were all closed-source. Even a lot of them that claimed to be “local” or “on-device” were still black boxes that left me wondering where my audio really went. So I built Whispering. It’s open-source, local-first, and most importantly, transparent with your data. Your data is stored locally on your device, and your audio goes directly from your machine to a local provider (Whisper C++, Speaches, etc.) or your chosen…

    2025 · github.com · its alternatives →

  4. 4

    Your friendly neighbourhood script for mangling images or video using audio editing tools - robertfoss/audio_shop

    2017 · github.com · its alternatives →

  5. 5WD

    2018 · dsp.audio · its alternatives →

  6. 6AP

    I made MAIM, an open-source audio plugin that uses real MP3 encoders to distort the sound. I've also added knobs that let you "circuit bend" the encoders, changing parameters that would normally be inaccessible to the user to get strange glitchy sounds. The plugin lets you switch between two MP3 encoders, since under the MP3 standard, the specifics of what to lose in MP3 lossy compression is left up to the encoder. The encoders are LAME, the gold standard for open-source MP3 encoders, and BladeEnc, an old open-source MP3 encoder that has a really bubbly sound and was fun to work with. I'd…

    2023 · wildergardenaudio.com · its alternatives →

  7. 7

    Draw.Audio is a free online music maker. Draw notes on a grid and hear them play back instantly — a browser-based synthesizer, sequencer, and visual instrument.

    2024 · draw.audio · its alternatives →

  8. 8

    Jam with friends

    2014 · soundtrap.com · its alternatives →

  9. 9

    Mastershot’s intuitive web-based video editor will have you churning out high quality videos in no time at all. And best of all, it

    2021 · mastershot.app · its alternatives →

  10. 10

    Record, edit, and share audio in your browser. Cut and trim clips, add effects, or convert audio files with Sodaphonic’s free online tools.

    2016 · sodaphonic.com · its alternatives →

  11. 11IM

    2022 · signalsandsorcery.org · its alternatives →

  12. 12

    Fully Open-sourced Online MIDI Editor

    2020 · signal.vercel.app · its alternatives →

  13. 13

    Hi HN, I’ve been working on a browser-based tool for exploring and debugging Web Audio API graphs. Web Audio Studio lets you write real Web Audio API code, run it, and see the runtime graph it produces as an interactive visual representation. Instead of mentally tracking connect() calls, you can inspect the actual structure of the graph, follow signal flow, and tweak parameters while the audio is playing. It includes built-in visualizations for common node types — waveforms, filter responses, analyser time and frequency views, compressor transfer curves, waveshaper distortion, spatial…

    Mar 2026 · webaudio.studio · its alternatives →

  14. 14FA

    Hi all, I've spent some time working on music demixing or music source separation algorithms, which take in a mixed song and output estimates of isolated components (e.g. vocals, drums, bass, other). I took a popular PyTorch model with good performance (Open-Unmix, UMX-L weights), reimplemented the inference steps in C++, and compiled it to WebAssembly for a free client-side music demixer.

    2023 · sevag.xyz · its alternatives →

  15. 15

    ossia score, an interactive sequencer for the intermedia arts - ossia/score

    2025 · github.com · its alternatives →

  16. 16
    FreeTTS▲123

    Top TTS converter & audio editor to speed up your workflow

    2024 · freetts.com · its alternatives →

  17. 17

    Free online audio editor

    2025 · soundtools.dev · its alternatives →

  18. 18

    Hi HN, I’ve been working on Libretto, a browser-based tool for editing long-form spoken content (podcasts, interviews, talking-head videos). You can think of it as a simpler, more focused alternative to Descript, optimized for editing long recordings faster. The motivation was pretty simple: editing spoken recordings still feels harder than it should be, and a lot of newer tools seem focused on short-form or AI-generated content.

    2024 · libretto.fm · its alternatives →

  19. 19

    Make simple 4-bar music loops in your browser using this simple online sequencer. A quick way to express your musical ideas and export them as MIDI.

    2022 · muted.io · its alternatives →

  20. 20

    Built a browser-based FFmpeg editor that runs entirely client-side via WebAssembly. Your files never leave your device -- all processing happens in a Web Worker. Works offline as an installable PWA after first load.

    Jun 2026 · github.com · its alternatives →

  21. 21ET

    2015 · shaungallagher.github.io · its alternatives →

  22. 22WP

    I vibe-coded a complete React rewrite of my multi-track audio editor with Claude. Waveform Playlist v5 started as a "let's see how far AI can take this" experiment. The original was vanilla JS (~8 years old). The new version is React + Tone.js with proper TypeScript, tree-shaking, and a modular package structure. What we built: canvas waveforms, drag-and-drop clip editing, 20+ Tone.js effects, AudioWorklet recording, WAV export, annotations, theming. Demos: https://naomiaro.github.io/waveform-playlist/examples/stem-tracks GitHub:…

    Jan 2026 · naomiaro.github.io · its alternatives →

  23. 23

    Transform your web audio with real-time effects

    Jul 2026 · chromewebstore.google.com · its alternatives →

  24. 24

    User tracking events that trigger sounds on a dashboard

    2019 · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →