I kept hitting the same wall with AI note tools: I want the help, but I don't want my notes living in someone else's database, and I don't want an agent rewriting things I can't get back.
So I built Ferrow — a local-first Markdown vault with reversible AI agents.
How it works:
- Your notes are plain
.mdfiles on your disk. No proprietary format, no lock-in — point any other tool at the same folder and it just works. - AI agents can organize, rewrite, link, and summarize — but every agent edit is reversible. Full undo, always. The agent proposes; you keep control.
- Everything local is free (macOS, Windows, Linux, plus an npm CLI). The only paid part is the optional relay for syncing across machines.
Why local-first: if the company behind your notes app disappears (including mine), you should lose nothing. With Ferrow you'd still have a folder of Markdown files.
We launched on Product Hunt today: https://www.producthunt.com/products/ferrow
Or grab it directly: https://ferrow.ai/?ref=devto — the code PRODUCTHUNT gets 30% off 3 months of the relay if you want the synced setup.
Happy to answer anything about the reversibility design or the local-first tradeoffs in the comments.
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