AudioMass
AudioMass provides browser-based audio and waveform editing with multitrack layers, crossfades, and recording.
About AudioMass
AudioMass is a web-based tool for editing audio and waveforms. It runs in a browser, and a hosted version is available at audiomass.co. The repository describes it as a free, full-featured editor.
A recent addition is a multitrack mode. It lets users layer several tracks, drag clips, crossfade overlapping clips, record onto armed channels, and bounce the project down to a single file. Running a local copy requires the repository files and either Go or Python to start a local web server.
Key features
- Multitrack mode for layering several audio tracks
- Dragging clips around on the timeline
- Crossfades for overlapping clips
- Recording onto armed channels
- Bouncing a multitrack project down to a single file
- Waveform editing in the browser
Best for: People who want a free, browser-based audio editor with multitrack editing and are comfortable starting a local server if they run it themselves.
Good for
- Described as free and full-featured
- Multitrack mode includes clip dragging, crossfades, and recording
- Can be used from the hosted site or run locally
Watch out for
- Running a local copy requires Go or Python and a local web server
AudioMass at a glance
- Category
- Music & Audio › Audio Editing & Production
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Audio Editing & Production
AudioMass alternatives
Tools and sites you could use instead, ranked by how closely they match.
Tenacity provides cross-platform multitrack audio recording and editing, with audio import, export, and plugin support in an open source project.
The Tenacity project offers a free, open source cross-platform multitrack audio editor for Windows, macOS, Linux, and other operating systems.
SuperCollider provides a free, open source platform for audio synthesis and algorithmic composition, with an audio engine, language, and editor.
Open source
Riffle provides a browser-based music space to record ideas, layer sounds, collaborate live, and share tracks.
Waveform Free is a free digital audio workstation for Mac, PC, and Linux, with recording workflows, mixing, and audio effects.
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AudioMass FAQ
How do I run AudioMass locally?
Check out the repository or download it as a zip, open the src directory in a terminal, and run either 'go run audiomass-server.go' or 'python audiomass-server.py'. Then open http://localhost:5055/ in a browser.
Is there a hosted version?
The repository lists a live version at https://audiomass.co.
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