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  1. fa77e68 disable AppLifecycleTests (#22236) by xster · 18 hours ago master
  2. 4e9459e Refactored the FlutterEngine to make it easier to implement spawn functionality (#21890) by gaaclarke · 19 hours ago
  3. 9b34207 Fixing semantics borders on mobile web (#21856) by nturgut · 19 hours ago
  4. 6a331d3 Roll Skia from 9615bcf71f2a to d5e6368fffd0 (8 revisions) (#22234) by skia-flutter-autoroll · 19 hours ago
  5. a36bcdc Roll Fuchsia Mac SDK from mhak7e_o6... to 8SkbMXJJ9... (#22231) by skia-flutter-autoroll · 19 hours ago

Flutter Engine

Build Status - Cirrus

Flutter is Google's mobile app SDK for crafting high-quality native interfaces in record time. 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.