The archive · Developer & Business Tools · Product decision · 2018–2026
Audiomass: audio editing in the browser, no install — two HN front-page hits
A 65KB open-source web editor that waited six years for its second act: multitrack shipped in 2026 and hit 553 HN points, after 1,011 in 2020
Audiomass (AudioMass, pkalogiros)
What the business is
Free, open-source, web-based audio and waveform editor — record, import, trim, fade, EQ, effects — running entirely in the browser with no install or account.
How it started
Greek developer Panagiotis Kalogiros started AudioMass in July 2018 to show that a full-featured audio editor could run entirely in the browser — a ~65KB vanilla-JS app, no plugin, no install, no account, working offline. When he posted it to Hacker News on 2020-05-28 it exploded: 1,011 points and 181 comments in a day, with the community comparing it to Audacity, testing format support, and praising the 'calm, solid' design.
What happened
Instead of cashing in or abandoning it, Kalogiros kept the project alive — 199 commits across six years, a Go-based local server for those who want it, a growing effects rack (EQ, compression, reverb, pitch-shift, LUFS metering). The payoff came in May 2026 with full multitrack: layer tracks, drag clips, crossfade overlaps, record onto armed channels, bounce the whole mix to one file. The Show HN post drew 553 points and 120 comments, and nonprofits like Building Beats in Brooklyn added it to the toolbox they teach middle- and high-school music production with.
How it ended up
Still live and open-source as of 2026-09-03; the multitrack release showed a free web tool can earn a second HN front page six years after its first — the last commit was 2026-08-20.
Background
When Panagiotis Kalogiros posted AudioMass to Hacker News on 28 May 2020, it took 1,011 points in a day: a full audio editor — record, import, trim, fade, EQ, reverb, pitch-shift — packed into ~65KB of vanilla JavaScript that ran offline in a browser tab. No install, no account, no plugin. Against Audacity's install-and-learn curve, the zero-install path was the whole pitch, and the community responded the way it responds to audacious constraint-satisfaction: with a wave of testing and praise.
Most single-developer launches peak and fade. AudioMass didn't: Kalogiros kept committing — 199 commits between 2018 and 2026, effects rack grown, a Go server for local use, LUFS loudness metering added. When multitrack shipped in May 2026 — layer tracks, drag clips, crossfade, record onto armed channels, bounce to a single file — the Show HN post drew 553 more points and 120 comments.
The second act also changed who found the tool: Brooklyn's Building Beats, a nonprofit teaching music production to middle- and high-schoolers, added it to its toolbox in January 2026, because a free, no-install editor is exactly what a classroom with school-issued Chromebooks can actually run. Six years after launch, the distribution channel that mattered wasn't an app store — it was a lesson plan.
What has to be true
- The zero-install bet removed the biggest barrier: a browser tab that works offline beats a 200MB desktop suite for school devices, borrowed computers, or privacy-minded setups.
- He stayed in the constraint: ~65KB of vanilla JS forced ruthless scope discipline, making the later multitrack addition genuinely impressive.
- The 2020-2026 gap worked as compound interest: each HN front page re-familiarized the community, and six-year continuity gave the second launch credibility.
- Nonprofit adoption (Building Beats) shows the product found an audience no growth hack could buy: classrooms where 'no install' is the only viable option.
What can be applied
Attention compounds for tools that keep paying off: shipping a flagship feature six years after launch earned a second HN front page — persistence was the moat.
Aftermath
As of 2026-09-03 AudioMass remains free, open-source and actively maintained — the last push to the repo was 20 August 2026. The 2026 multitrack release brought the tool from hobbyist single-track editing toward podcast and classroom use, and the Building Beats toolbox page gives it a durable institutional distribution channel. Kalogiros continues solo development; there is no company, revenue model or funding, and the editor's staying power rests on a second HN front page almost exactly six years after the first.
Sources
- Show HN: Audiomass — a free, open-source multitrack audio editor for the web
- Show HN: AudioMass — free, open source, web-based Audio and Waveform editor
- Audiomass — Building Beats toolbox
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