Limestone mark limestone
American Wetware

Tools for knowledge
you actually own.

American Wetware builds open, AI-native software for scientific and personal notes. Limestone is our notebook.

American Wetware makes software for the messy, long-lived work of thinking and record-keeping — lab notebooks, research files, and the notes that tie them together. We start from a simple conviction: the knowledge you create should belong to you, in formats that will still open long after any particular app, model, or company is gone.

Limestone is our first product. It's a local-first, AI-native notebook where your notes stay ordinary files on your own device — portable, private, and readable by both humans and machines. AI is a reviewed collaborator that can propose changes, never an owner that takes control of your record.

What we believe

  • Transparency. Open file formats and open source. No black boxes between you and your own work.
  • Portability. Your notes are plain files you can pick up and carry anywhere — no export ritual, no lock-in.
  • AI-native, on your terms. Bring whatever AI helps you. It reads and proposes; you decide what becomes part of the record.

Limestone & American Wetware

Limestone shares American Wetware's core identity — the same green (#2FBF39) and paper (#FBFFF6), the same commitment to transparency and portability — while keeping its own recognition anchors: the bracketed [[limestone]] mark and the Space Mono wordmark. It's a distinct product with a shared foundation.

// open

Open by default

Open formats, open source. The things you make in Limestone don't depend on us to stay readable.

// private

Private by design

Local-first, no telemetry by default. Your files stay on your terms, and we never read them.

// durable

Built to last

Human- and machine-readable notes that survive changing tools, models, and vendors — including us.

Get in touch

Questions, early access, or partnership ideas — we'd like to hear from you.