# AtStash — by ATinfotech

> AtStash is a free, open-source (MIT) browser extension that combines a bookmark manager
> and a password manager in one local-first, zero-knowledge vault. It encrypts every saved
> item with AES-256-GCM using a key derived from the user's master password via
> PBKDF2-HMAC-SHA256 (100,000 iterations — the OWASP-recommended minimum). All data is
> stored only in the browser's local storage: no account, no cloud, no telemetry, no network
> permissions. It works fully offline.

## Key facts

- Product: AtStash — secure bookmark & password manager browser extension
- Developer: ATinfotech (privacy-first web tools) — https://atinfotech.com/
- Current version: 3.0.0 | Size: 188.81 KB | Architecture: Manifest V3
- License: MIT (open source, buildable from source with Node.js >= 20)
- Price: Free forever, no subscription, no premium tier
- Rating: 5.0 / 5 on Firefox Add-ons
- Stack: TypeScript, React, WXT, Web Crypto API

## Features

- Master-password vault (single password unlocks everything)
- Bookmarks with nested folders, tags, and instant search
- One-click login auto-fill via a "Fill saved login" pill on detected login forms
- Cryptographically secure password generator (guaranteed character classes)
- Encrypted backups as self-contained .atstash files (merge-by-ID on import)
- Auto-lock timer, keyboard shortcuts (Ctrl+Shift+S open, Ctrl+Shift+L lock)
- Light and dark themes
- Clipboard auto-clear 15 seconds after copying a secret

## Security model

1. Encryption at rest: every item is an individually encrypted AES-256-GCM blob.
2. Key derivation: PBKDF2-HMAC-SHA256, 100,000 iterations.
3. Ephemeral keys: the derived key exists only in memory and is cleared by auto-lock.
4. No network, no tracking: zero telemetry, zero data collection, works offline.
5. Zero-knowledge: no server means a forgotten master password cannot be reset.

## Links

- Product page: https://atinfotech.com/tools/atstash/
- Firefox Add-on: https://addons.mozilla.org/en-US/firefox/addon/atstash/
- Chrome/Edge download: https://atinfotech.com/tools/atstash/index.php?download=chrome
- Support: atinfotech@gmail.com