May 24, 2026
No install, all the opinions
Show HN: Audiomass – a free, open-source multitrack audio editor for the web
This free browser audio editor wowed fans — and instantly triggered a wishlist storm
TLDR: AudioMass is a free audio editor that works entirely in your web browser, which makes it unusually easy to try. Commenters loved the idea, then instantly flooded it with feature requests about track limits, file support, and pro-level music tools — a sure sign they think it could become a big deal.
A new Show HN post for AudioMass should have been a simple victory lap: a free, open-source audio editor that runs right in your browser with no installs, no plugins, and a long menu of tools for cutting, recording, mixing, and adding effects. Instead, the comments turned into the internet’s favorite sport: compliment first, then demand everything. One user dropped the wholesome approval stamp — “this is cool thanks for making it!” — while others immediately rolled in with the classic power-user energy: How many tracks can it handle? Will it support obscure music file formats? Can it import stem bundles? And, naturally, where’s the MIDI and VST support?
That’s the real mood here: people are impressed, but also acting like they’ve just spotted a scrappy underdog they want promoted straight into the big leagues. One commenter compared it to Audacity, but in a calmer, sleeker form — basically saying AudioMass has the familiar bones of a beloved audio tool without the clunky vibes. Another politely crashed the party by asking for XM support after hitting an “Unsupported” wall, which is the nerd equivalent of showing up with a bug report as a housewarming gift. The funniest mini-drama is that nobody seems content to leave this as a neat little web app; the crowd is already trying to turn it into a full music studio. In other words: the app launched, and the comments immediately started producing the sequel.
Key Points
- •AudioMass is presented as a free, open-source audio and waveform editor that runs entirely in the browser without a backend or plugins.
- •The application supports loading audio from a computer, URL, sample file, or live recording, and allows local draft saving and export/download.
- •A multitrack editing mode labeled beta includes channel controls such as add/delete track, mute, solo, volume, pan, and record trigger.
- •The editor includes numerous built-in effects and processing tools, including EQ, compression, normalization, limiter, delay, distortion, reverb, repair, and silence removal.
- •The article links to the project’s GitHub source code and notes that many editing shortcuts use Shift-key combinations.