A privacy-first Chromium browser that encrypts your local data with military-grade cryptography. Your cookies, history, bookmarks, passwords, and sessions — locked behind your master password. Free for Windows 10/11.
Create separate user profiles, each with its own master password. Switch profiles from the login screen. Zero data mixing.
All cookies and session data are encrypted at rest using AES-256-GCM. Decrypted only after successful login.
Browsing history and search queries are stored encrypted on disk. Nobody can read them without your password.
Bookmarks and saved passwords live in your personal encrypted vault — never stored in plaintext.
Set an inactivity timer. After X minutes without input, the browser locks itself. Also locks on minimize.
Select from multiple dark and light themes. Your selection is saved per profile.
Inactive tabs are automatically suspended to reduce memory usage and improve performance.
Full UI available in English, Spanish, French, German, Portuguese, and Chinese.
OffShore uses a dual-layer encryption system called Vault v2. Here's what happens under the hood.
Your master password is hashed with PBKDF2-HMAC-SHA512 (600,000 iterations) to derive a 64-byte master key. This makes brute-force attacks computationally infeasible.
The master key is split into domain-specific subkeys using HKDF: one for cookies, one for storage, one for settings, one for verification. Each domain is isolated.
Each encrypted blob uses AES-256-GCM with AAD (Authenticated Additional Data) that binds it to its domain. A blob from cookies cannot be transplanted to storage.
Profile metadata gets a second layer of encryption using an app-level key (PBKDF2, 200,000 iterations). All files use a versioned binary format with magic bytes for integrity checks.
⚠️ Important: OffShore is not a VPN, proxy, or network tunnel. Your internet traffic is not routed through any server. It protects what is stored on your computer — it's a local data protection tool, not an anonymity solution.
Free for Windows 10 and 11. No account required. Your data stays on your machine.