GN Generate Ninja
Meta-build for Chromium — generates Ninja files. Replaced GYP 2014. Faster + cleaner build configs.
Used by Chromium, V8, Skia, Fuchsia, Dawn (WebGPU). Config file: BUILD.gn in own DSL (not Starlark). Pitch: super fast generation (10× faster than GYP). Niche outside of Google. Competitors: CMake (most generic), Meson, Bazel.