An experimental browser engine written in Rust, developed as part of research into collaborative parallel AI coding agents. Currently under development.

• Spec-compliant HTML/CSS rendering
• JavaScript execution with DOM bindings
• Multiprocess architecture with sandboxed renderers
• Cross-platform support (Linux, macOS)

• Rust 1.70+ (stable channel)
• Git (for submodule checkout)
• CMake (for AVIF/libaom build)

# Install Xcode Command Line Tools (provides clang)
xcode-select --install

# Install build dependencies via Homebrew
brew install cmake make

# GNU Make is required for the libvpx codec build.
# macOS ships BSD make by default; the build will use `gmake` when available.

Note: Ensure gmake is in your PATH after installing GNU make.

# Install build essentials and Clang (required as linker driver)
sudo apt-get update
sudo apt-get install -y \
  build-essential \
  pkg-config \
  cmake \
  clang \
  lld

# Install GUI/X11 dependencies:
sudo apt-get install -y \
  libasound2-dev \
  libwayland-dev \
  libxkbcommon-dev \
  libvulkan-dev \
  libegl1-mesa-dev \
  libx11-dev

Optional but recommended: Install mold for significantly faster linking:

sudo apt-get install -y mold

The build system automatically uses mold when available. Disable with FASTR_USE_MOLD=0.

Note: Under heavy development and change, may not be in a stable state. Builds are currently focused on Linux x64 and macOS ARM64 only.

First, initialize the submodules:

git submodule update --init vendor/ecma-rs

cargo run --release --features browser_ui --bin browser

See docs/ for detailed documentation.