Titan Browser

A secure, fully open-source Chromium-based browser with Isolated Tab Groups — available on Android, Linux, Windows, and macOS.

Built on Vanadium by GrapheneOS, extended with Titan's signature privacy and isolation features.

Package ID: com.aivos.titan

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✨ Key Features

🔒 Isolated Tab Groups (Titan exclusive)

Each isolated group runs in its own independent Chromium profile — complete data isolation with zero sharing between groups or the main profile:

Data	Main Profile	Isolated Group A	Isolated Group B
Cookies	✅	🔒 own	🔒 own
LocalStorage	✅	🔒 own	🔒 own
IndexedDB	✅	🔒 own	🔒 own
Cache	✅	🔒 own	🔒 own
Service Workers	✅	🔒 own	🔒 own
Passwords	✅	🔒 own	🔒 own
History	✅	🔒 own	🔒 own
Downloads	✅	🔒 own	🔒 own
Permissions	✅	🔒 own	🔒 own

Example — Multi-account Netflix:

Main profile          → Netflix (personal account)
Isolated Group A      → Netflix (work account)     ← no data shared with main
Isolated Group B      → Netflix (family account)   ← no data shared with A or main

Where to find Isolated Tab options

Every entry point in the browser exposes the isolated tab option:

Location	Action
Long-press / right-click any link	Open in isolated tab
Tap "+" button	New isolated tab
Tab switcher → tab menu	Move to isolated group
Tab group creation dialog	Create isolated group
Tab list editor (multi-select)	Move to isolated group
Browser menu (⋮)	New isolated tab

🛡️ Security & Privacy

• All 284+ Vanadium/GrapheneOS security patches
• Strict site isolation enabled by default
• MV2 extensions supported
• Off-store extension installation (Chrome Web Store, Opera, Edge add-ons)
• Extensions work in private/incognito tabs
• WebRTC IP policy control
• Disabled: metrics, field trials, contextual search, hyperlink auditing
• Local password manager (no Google account required)

🖥️ Cross-Platform

Platform	Status	Architecture
Android	✅ Available	arm64-v8a, armeabi-v7a
Linux	✅ Available	x86_64
Windows	🔧 Build available	x86_64
macOS	🔧 Build available	arm64, x64

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📦 Installation

Android

Linux

# Download the latest release
wget https://github.com/ferelking242/titan-browser/releases/latest/download/titan-browser-linux-x64.tar.gz
tar -xzf titan-browser-linux-x64.tar.gz
./titan-browser

Windows / macOS

Download from Releases.

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🔧 Building

Android (via GitHub Actions)

All releases are built using Actions.

Fast build (arm64 only, ~1 hour): → Actions → Build Android → Run workflow → arch: arm64-only

Full build (arm + arm64, ~2 hours): → Actions → Build Android → Run workflow → arch: arm+arm64

Required secrets (Settings → Secrets → Actions):

Secret	Description
LOCAL_TEST_JKS	base64-encoded local.properties (keyAlias, keyPassword, storePassword)
STORE_TEST_JKS	base64-encoded keystore.jks

Linux / Windows / macOS

Use the dedicated workflows in Actions with a self-hosted runner on the target OS.

Verify builds

gh attestation verify *.apk -R ferelking242/titan-browser

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🏗️ Architecture

flowchart TD
    subgraph Chromium["Chromium (base)"]
        A[Chromium source]
    end
    subgraph Vanadium["Vanadium (GrapheneOS)"]
        B[284 security patches]
        C[Privacy hardening]
    end
    subgraph Titan["Titan Browser"]
        D[Isolated Tab Groups]
        E[Cross-platform builds]
        F[com.aivos.titan package]
        G[MV2 + Extensions support]
    end
    A --> B --> D
    A --> C --> D
    D --> E --> F
    D --> G

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Implementation detail: Isolated Tab Groups use Chromium's native OTRProfileID.createUnique() API — not a simulation. Each group gets a true independent Profile → BrowserContext → StoragePartition.

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📄 Credits

Built on the incredible work of:

• GrapheneOS Vanadium — security & privacy patches
• Chromium — the browser engine
• All original Vanadium contributors

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📜 License

GPL-2.0 — see LICENSE.