Polyphonic Web Audio Synthesizer
Web audio based synth, play it with the computer keyboard or a MIDI keyboard.
Polyphonic Web Audio Synthesizer launched on March 24, 2017 with 7 votes, #1,317 of 3,481 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 9 years on.
Does a similar job
all alternatives →
Draw.Audio – A musical sketchpad using the Web Audio API2024 · draw.audio · ▲249Draw.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.
HTML5 Piano - with its own data URI synth2012 · mrcoles.com · ▲64A synth piano synth that generates all of its audio files dynamically using JavaScript and data URIs. Choose from a variety of sounds styles and play with the looper, visual waveforms, and more.
- ASA singing synthesizer for the browser with automatic 3-part harmony2024 · pbat.ch · ▲208
- IBI built a WebMIDI sequencer to control my hardware synthsDec 2025 · simplychris.ai · ▲43
Hey HN, I’m an ex-Google engineer trying to get back into music production. I needed a way to sequence my hardware synths using AI contexts without constantly switching windows, so I built this. It runs entirely in the browser using WebMIDI. No login required. It connects to your local MIDI devices (if you're on Chrome/Edge) and lets you generate patterns. Tech stack: [React / WebMIDI API / etc]. Link: www.simplychris.ai/droplets Code is a bit messy, but it works. Feedback welcome.
The first websynth that's 100% mappable to a MIDI controller2015 · github.com · ▲122Emulation of the Roland Juno-106 analog synth. Contribute to stevengoldberg/juno106 development by creating an account on GitHub.
Typebeat: Keyboard-controlled music sequencer, sampler, and synth2022 · github.com · ▲201Keyboard-controlled music sequencer, sampler, and synth - kofigumbs/typebeat
More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 24h ago · permit.petercai.com
- IV
Life & fun · 13d ago · tanzaniaeducationproject.org
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 14d ago · bigwords.page
Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 8d ago · guitoro.com
Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 12d ago · carrierexplode.com
Life & fun · 22d ago · space.bl2.net
Source: Show HN post ↗
Launched alongside, March 2017
the whole month →
Startup School▲1,010A free online program to teach you how to start a company
Life & fun · 2017 · startupschool.org
Hardbound 3.0▲739Illustrated summaries of bestselling nonfiction books
Life & fun · 2017 · apps.apple.com
