Web-REPL "skred" : my OSS sound engine w/retro C64 appearance
I've been working on a C-based open source sound engine as part of a book project and wanted an approachable way for people to try it out without having to build anything. Through the magic of emscripten (which I'm totally amazed by) and miniaudio (which has given me new life late in my development career), and a smidge of vibe-coded HTML/JS (web-dev is not my jam), this page will let you try out the tooling. I gave a lightning talk on the ASCII notation at ElixirConf EU last month here: https://www.youtube.com/watch?v=SnJ0osgiqWM There's a work-in-progress tutorial for…
What it does
In the maker’s words, at launch
I've been working on a C-based open source sound engine as part of a book project and wanted an approachable way for people to try it out without having to build anything. Through the magic of emscripten (which I'm totally amazed by) and miniaudio (which has given me new life late in my development career), and a smidge of vibe-coded HTML/JS (web-dev is not my jam), this page will let you try out the tooling. I gave a lightning talk on the ASCII notation at ElixirConf EU last month here: https://www.youtube.com/watch?v=SnJ0osgiqWM There's a work-in-progress tutorial for the notation used in this tool at: https://octetta.github.io/pulp/doc/learn.html and a long-winded YT video of me showing a bit at: https://youtu.be/_wNQ24EJKa0 I'll be showing this stuff off at the Audio Developer Conference in Tokyo June 2nd 2026. https://adcjapan26.sched.com/event/2KCdr/beeps-and-ports-ann... If you're there and you're an audio developer (I'm not), I'd sure like feedback and guidance. Oh, one other thing, a side-project that I showed here last month (k-synth) IS embedded here but that documentation is yet to be written. You can read about that project at: https://github.com/octetta/k-synth and there's also a web-UI for that tool to learn the weirdo-API-ish notation here https://octetta.github.io/k-synth/ Have fun, be nice.
Does the same job
all alternatives →- SMSkred – my opinionated sound/pattern engine and live coding thingyJul 2026 · octetta.github.io · ▲5
This is my noisy and ugly baby... but I love it...


- IVI vibe coded a DAW for the terminal. how'd I do?Feb 2026 · github.com · ▲5
So, I've never written a line of Rust in my life. I wouldn't know an `&mut this` from a mutandis. But I saw a tweet about a month ago that said, in this new era of AI, you'd be able to just take a library that you love, throw a TUI around it, and call it an app. So I spent about 200 bucks last month, here's what I came up with: Imbolc is a DAW that runs entirely in your terminal. It talks to scsynth over OSC and ships 58 instruments and 39 effects. VSTs are a work in progress, also GarageBand loops if you want to recreate "Umbrella". The codebase is about 60k? lines of Rust across 5 crates,…
- BBBrowser based sythesizer, drum machine and squencerMay 2026 · github.com · ▲22
Inspired by the recent Boards Of Canada announcement, I've been in a low-fi electronica mood lately and was going back and forth with Claude on how to design similar instruments in the browser that fit the genre. One thing led to another and pretty soon I had a fully browser based polyphonic synthesizer / drum machine / sequencer. The interface and workflow was heavily inspired by the Rebirth338 application released back in the 90's, but with lo-fi synth voices rather than the original 303 & 808 emulation. I know there's a significant overlap of developers and musicians and I…
- IBI Built a Sequencer for the Web2024 · minitap.io · ▲5
Hey HN! Last week I was working on a website and needed a way to synchronise visuals with live music. I've used MIDI controllers for this before, but I am travelling right now and don't have mine with me. So I had the crazy idea to build a browser extension that uses the keyboard as input and includes a sequencer. I gave myself 24 to work on it. It ended up taking longer (of course), specially since I ended up creating a demo, a small landing, docs, and an intro video. Took me one week from idea to launch (pushed quite a bit tbh). Features: - Works as a browser extension. Atm distributed…
More dev tools this month
the category →



Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com

Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai


- NW
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com
- FM
Dev tools · May 2026 · github.com