MyPassword

MyPassword is a free, open-source, offline password manager. All data is encrypted with AES-256-GCM and stored locally — nothing is sent to the cloud.

Download

Pre-compiled release can be downloaded from GitHub. Source code can also be get from GitHub.

The official chrome extension can be installed from Chrome Web Store.

Key Features

• Offline & local — your vault never leaves your device
• AES-256-GCM encryption — military-grade encryption with PBKDF2 key derivation (1M iterations)
• Three item types — Logins, Notes, and Identities
• Chrome extension — auto-fill, auto-save, and search from the browser
• Password generator — configurable length and character styles
• OAuth recovery — recover your vault with Google or Microsoft if you forget your master password
• Auto-lock — locks automatically after system idle (keyboard/mouse inactivity)
• Clipboard protection — copied passwords are cleared automatically
• Cross-platform — runs on Windows, macOS, and Linux
• Multi-language — English and Chinese

How It Works

Master Password ──> PBKDF2 ──> Wrapping Key ──> Decrypts DEK
                                                      |
                                                AES-256-GCM
                                                      |
                                                 Vault Data

Your master password derives a key that unwraps the Data Encryption Key (DEK). The DEK encrypts all vault items. Optionally, a second copy of the DEK is protected by your OAuth identity for recovery.

Documentation

• User Guide — features, usage, Chrome extension, settings
• Key Generation & Encryption — AES key generation, PBKDF2, OAuth recovery internals
• Backup Guide — how to back up and restore your vault

Quick Start

1. Download the latest release for your platform
2. Run MyPassword.exe (Windows), MyPassword.app (macOS), or MyPassword (Linux)
3. Create a master password on first launch
4. Start adding logins, notes, and identities
5. Install the Chrome extension from extension/chrome/ for browser auto-fill

Requirements

• A modern desktop OS (Windows 10+, macOS 12+, or a recent Linux). The release is shipped as a self-contained Native AOT binary — no runtime install required.
• Chrome browser (for the extension)

Build from Source

The desktop app is a C#/.NET project compiled with Native AOT. From the repository root:

dotnet publish MyPasswordDesktop/MyPasswordDesktop.csproj \
    -c Release -r <rid> --self-contained true -o publish

Replace <rid> with your target runtime: win-x64, osx-arm64, osx-x64, or linux-x64. The standalone binary is written to publish/.