A security-focused web browser built in C++ with Qt6 WebEngine.

• Sandboxed Tabs — Each tab runs in an isolated process with OS-level sandboxing
• Ad & Tracker Blocking — Built-in EasyList/EasyPrivacy filtering, no extensions needed
• DNS-over-HTTPS — Encrypted DNS via Cloudflare or Quad9, preventing ISP snooping
• Zero Telemetry — No analytics, no crash reports, no data collection whatsoever
• Strict TLS — Certificate pinning, TLS 1.2+ only, certificate transparency checks
• Security Indicator — Lock icon in the address bar shows connection security at a glance
• CSP Enforcement — Content Security Policy headers injected and enforced
• Ephemeral by Default — All browsing data wiped on exit; no persistent cookies, cache, or history. Right-click any tab to save its session and persist cookies, cache, and local storage across restarts
• Dark Theme — Custom dark UI with SVG icons, styled tabs, toolbar, and address bar
• Configurable Settings — DNS provider, search engine, ad blocking, JavaScript, and privacy options via a built-in settings dialog
• Download Manager — Built-in download handling with progress tracking, configurable download directory, and toolbar indicator
• Favorites — Full-featured bookmarks system with groups, pinning, drag-and-drop reordering, search, and persistent storage; star button in toolbar, Ctrl+D to toggle, Ctrl+B for panel
• Live Log Viewer — Built-in log panel with syntax-highlighted output, dockable as a vertical or horizontal pane via the View menu

macOS (Homebrew Cask):

brew tap scowser/scowser
brew install --cask scowser

Linux (Homebrew Formula):

brew tap scowser/scowser
brew install scowser

• C++20 compiler (Clang 14+ or GCC 12+)
• CMake 3.22+
• Qt6 6.5+ with WebEngine module

macOS:

brew install qt@6 cmake

Linux (Debian/Ubuntu):

sudo apt install qt6-webengine-dev qt6-base-dev libqt6svg6-dev cmake g++

Linux (Fedora):

sudo dnf install qt6-qtwebengine-devel qt6-qtbase-devel qt6-qtsvg-devel cmake gcc-c++

cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build --parallel
./build/scowser

cmake -B build -DBUILD_TESTING=ON
cmake --build build --parallel
ctest --test-dir build --output-on-failure

scowser embeds Chromium via Qt6 WebEngine and layers security controls on top:

┌─────────────────────────────────┐
│           scowser UI            │
│  (MainWindow, Tabs, AddressBar) │
├─────────────────────────────────┤
│        Security Layer           │
│  AdBlocker · DoH · CertPinner   │
│  CSP Enforcer · SessionManager  │
├─────────────────────────────────┤
│     Request Interceptor         │
│  (filters all network traffic)  │
├─────────────────────────────────┤
│      Qt6 WebEngine (Chromium)   │
│   (rendering, JS, sandboxing)   │
└─────────────────────────────────┘

See LICENSE for details.