Clone this repo:
  1. 9729b80 Roll buildroot to 6cee685b6bed193471aa7eaffae1fdc56cef0060 (#27845) by Chris Bracken · 3 hours ago master
  2. d0343f1 TimePoint::Now uses DartTimestampProvider (#27737) by Kaushik Iska · 4 hours ago
  3. bf06b19 Ensure correct child isolate initialization in enable-isolate-groups dart vm configuration. (#26011) by Alexander Aprelev · 4 hours ago
  4. 86c6255 Fix race condition in FlutterSurfaceManager (#27828) by Matej Knopp · 6 hours ago
  5. 49f4eaa Improve documentation of Path.extendWithPath (#27793) by William Hesse · 10 hours ago

Flutter Engine

Build Status - Cirrus

Flutter is Google's SDK for crafting beautiful, fast user experiences for mobile, web, and desktop from a single codebase. Flutter works with existing code, is used by developers and organizations around the world, and is free and open source.

The Flutter Engine is a portable runtime for hosting Flutter applications. It implements Flutter's core libraries, including animation and graphics, file and network I/O, accessibility support, plugin architecture, and a Dart runtime and compile toolchain. Most developers will interact with Flutter via the Flutter Framework, which provides a modern, reactive framework, and a rich set of platform, layout and foundation widgets.

If you want to run/contribute to Flutter Web engine, more tooling can be found at felt. This is a tool written to make web engine development experience easy.

If you are new to Flutter, then you will find more general information on the Flutter project, including tutorials and samples, on our Web site at For specific information about Flutter's APIs, consider our API reference which can be found at the

Flutter is a fully open source project, and we welcome contributions. Information on how to get started can be found at our contributor guide.