tabb.

Runs entirely on your device

Autofill that
actually knows you.

Tabb shows a gray ghost suggestion in every text box you touch and learns from what you keep. The AI runs locally in your browser — no backend, no accounts, nothing ever leaves your machine.

Add to Chrome — free See how it works

MV3 · Chrome 114+ · open source · zero telemetry

0servers your data hits
100%on-device inference
∞fields it works in
1key to accept — Tab
🔒

Private by construction

Inference and storage are 100% local — IndexedDB and an on-device model. The only network call is a one-time model download on first run. After that, fully offline.

🧠

Learns what you accept

Every accept, dismiss, and correction nudges Tabb's memory with decay and ranking, so suggestions get sharper the more you use it — and learned rejections stop coming back.

⌨️

Everywhere you type

Gmail, docs, search boxes, chat, forms, bios — any editable field gets a ghost. Structured fields fill deterministically; prose is completed by the local model.

How it fills

  1. 1

    Known fields fill deterministically

    Email, name, phone, address parts and the like come straight from your saved memory — shown as ghost text. No model runs, so there's nothing to hallucinate.

  2. 2

    Prose is completed on-device

    Free-text fields are continued by LFM2.5-350M running via WebGPU inside the extension. A short, relevant slice of your private activity journal grounds each suggestion.

  3. 3

    Sensitive fields are never touched

    Passwords, card numbers, security codes, one-time codes and government IDs never get a suggestion and are never stored. Login and payment pages are skipped entirely.

Your data stays yours.

There is no Tabb account, no cloud, and no analytics. Hard secrets are scrubbed before anything is stored, incognito windows are never recorded, and a single Clear memory button wipes everything. The code is open — read it yourself.

Read the source

Add Tabb to Chrome

Free, open source, and local-only. Load it in under a minute.

  1. Clone or download the repo from GitHub.
  2. Open chrome://extensions and turn on Developer mode.
  3. Click Load unpacked and select the project folder.
  4. Focus any text field and start typing — press Tab to accept the ghost.
Get Tabb on GitHub