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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 — one app, all your context
I use more and more tools: a Markdown editor for notes, a whiteboard for diagrams, an ER tool for data models, plus three terminals running Claude Code, Codex, and Gemini CLI. Every context switch means switching windows, and every time I write something I have to first think "which App to put it in." Not to mention cloud syncing keeping me on edge — private notes, company documents, customer data, all on someone else's servers.
Folyn aims to solve exactly this: gather all context into one local app, with data always on your own disk.
1. Tool fragmentation: Markdown / whiteboard / ER diagrams / mind maps / JSON / CSV, all in one editor, no need to install a dozen Apps
2. Data sovereignty: local-first, Vault isolation, each project has an independent data space, no cloud account, no sync anxiety
3. AI vendor lock-in: built-in 6 CLI Agent adapters (Claude Code / Codex / Gemini CLI / Opencode / Pi /Qoder), switch models per task, bound to no one
4. AI and editing disconnected: built-in terminal, Claude Code can directly read/write the current document, and once AI finishes editing, the editor shows it immediately — "edit → invoke → paste back" becomes one step
5. Full-format preview: Office, audio/video, archives, e-books, presentations, engineering drawings, viewable without leaving the app
6. In-app terminal: side by side with the editor, file paths auto-synced, AI directly edits documents
7. Plugin system: microkernel + Plugin SDK, translation / schedule / Wiki / Clips / project analysis provided as plugins, supports third-party extensions
8. Voice input: real-time transcription + auto-polish, pasted directly at the cursor (currently macOS)
If you're also tired of switching windows between five or six tools, tired of handing private data to the cloud, tired of being locked to a single AI vendor — welcome to download and try:
- Download: https://github.com/linyimin0812/...
- Source: https://github.com/linyimin0812/...
I use it for work every day, and I hope it's useful to you too. If you encounter bugs, need a feature, or want a plugin, just open an issue on GitHub
this is a project still growing, and your feedback will directly influence the next step.
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About folyn on Product Hunt
“One app, all your context”
folyn was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #90 on the daily leaderboard. 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 was featured in Open Source (68.8k followers), Text Editors (16.8k followers), GitHub (41.4k followers) and Vibe coding (650 followers) on Product Hunt. Together, these topics include over 45.7k products, making this a competitive space to launch in.
Who hunted folyn?
folyn was hunted by Yimin Lin. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Yimin Lin