folyn
One app, all your context
What it does
A local-first editor desktop application. It isolates every piece of data using Vaults, uses a single editor to accommodate Markdown, whiteboards, ER diagrams, mind maps, and rich text editing. Meanwhile, it features a microkernel + plugin architecture, supporting extensible plugins to integrate new file types and tools. It also brings AI agents directly into the workflow to maximize editing efficiency. Finally, all content always remains on the local device, offering a full sense of security.
Folyn 是一款本地优先的知识管理桌面应用:多仓库隔离、多格式编辑与预览、AI 深度集成、插件系统与语音输入。
Does the same job
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Notion-style editor for Tiptap Cloud2025 · ▲195Collaborative block-based editor → ready to drop in your app

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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 · 1d ago · opentrailpaper.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 16d ago · simedw.com