[](https://flutter-dashboard.appspot.com/#/build?repo=flutter) [![Discord badge][]][Discord instructions] [![Twitter handle][]][Twitter badge] [](https://codecov.io/gh/flutter/flutter) [](https://bestpractices.coreinfrastructure.org/projects/5631) [](https://deps.dev/project/github/flutter%2Fflutter) [](https://slsa.dev) 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. ## Documentation * [Install Flutter](https://flutter.dev/get-started/) * [Flutter documentation](https://docs.flutter.dev/) * [Development wiki](https://github.com/flutter/flutter/wiki) * [Contributing to Flutter](https://github.com/flutter/flutter/blob/main/CONTRIBUTING.md) For announcements about new releases, follow the [flutter-announce@googlegroups.com](https://groups.google.com/forum/#!forum/flutter-announce) mailing list. Our documentation also tracks [breaking changes](https://docs.flutter.dev/release/breaking-changes) across releases. ## Terms of service The Flutter tool may occasionally download resources from Google servers. By downloading or using the Flutter SDK, you agree to the Google Terms of Service: https://policies.google.com/terms For example, when installed from GitHub (as opposed to from a prepackaged archive), the Flutter tool will download the Dart SDK from Google servers immediately when first run, as it is used to execute the `flutter` tool itself. This will also occur when Flutter is upgraded (e.g. by running the `flutter upgrade` command). ## About Flutter We think Flutter will help you create beautiful, fast apps, with a productive, extensible and open development model, whether you're targeting iOS or Android, web, Windows, macOS, Linux or embedding it as the UI toolkit for a platform of your choice. ### Beautiful user experiences We want to enable designers to deliver their full creative vision without being forced to water it down due to limitations of the underlying framework. Flutter's [layered architecture] gives you control over every pixel on the screen and its powerful compositing capabilities let you overlay and animate graphics, video, text, and controls without limitation. Flutter includes a full [set of widgets][widget catalog] that deliver pixel-perfect experiences whether you're building for iOS ([Cupertino]) or other platforms ([Material]), along with support for customizing or creating entirely new visual components.

### Fast results Flutter is fast. It's powered by hardware-accelerated 2D graphics libraries like [Skia] (that underpins Chrome and Android) and [Impeller]. We architected Flutter to support glitch-free, jank-free graphics at the native speed of your device. Flutter code is powered by the world-class [Dart platform], which enables compilation to 32-bit and 64-bit ARM machine code for iOS and Android, JavaScript and WebAssembly for the web, as well as Intel x64 and ARM for desktop devices.

### Productive development Flutter offers [stateful hot reload][Hot reload], allowing you to make changes to your code and see the results instantly without restarting your app or losing its state. [![Hot reload animation][]][Hot reload] ### Extensible and open model Flutter works with any development tool (or none at all), and also includes editor plug-ins for both [Visual Studio Code] and [IntelliJ / Android Studio]. Flutter provides [tens of thousands of packages][Flutter packages] to speed your development, regardless of your target platform. And accessing other native code is easy, with support for both FFI ([on Android][Android FFI], [on iOS][iOS FFI], [on macOS][macOS FFI], and [on Windows][Windows FFI]) as well as [platform-specific APIs][platform channels]. Flutter is a fully open-source project, and we welcome contributions. Information on how to get started can be found in our [contributor guide](CONTRIBUTING.md). [flutter.dev]: https://flutter.dev [Discord instructions]: https://github.com/flutter/flutter/wiki/Chat [Discord badge]: https://img.shields.io/discord/608014603317936148?logo=discord [Twitter handle]: https://img.shields.io/twitter/follow/flutterdev.svg?style=social&label=Follow [Twitter badge]: https://twitter.com/intent/follow?screen_name=flutterdev [layered architecture]: https://docs.flutter.dev/resources/inside-flutter [architectural overview]: https://docs.flutter.dev/resources/architectural-overview [widget catalog]: https://flutter.dev/widgets/ [Cupertino]: https://docs.flutter.dev/development/ui/widgets/cupertino [Material]: https://docs.flutter.dev/development/ui/widgets/material [Skia]: https://skia.org/ [Dart platform]: https://dart.dev/ [Hot reload animation]: https://github.com/flutter/website/blob/main/src/assets/images/docs/tools/android-studio/hot-reload.gif?raw=true [Hot reload]: https://docs.flutter.dev/development/tools/hot-reload [Visual Studio Code]: https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter [IntelliJ / Android Studio]: https://plugins.jetbrains.com/plugin/9212-flutter [Flutter packages]: https://pub.dev/flutter [Android FFI]: https://docs.flutter.dev/development/platform-integration/android/c-interop [iOS FFI]: https://docs.flutter.dev/development/platform-integration/ios/c-interop [macOS FFI]: https://docs.flutter.dev/development/platform-integration/macos/c-interop [Windows FFI]: https://docs.flutter.dev/development/platform-integration/windows/building#integrating-with-windows [platform channels]: https://docs.flutter.dev/development/platform-integration/platform-channels [interop example]: https://github.com/flutter/flutter/tree/main/examples/platform_channel [Impeller]: https://docs.flutter.dev/perf/impeller