flutter / flutter

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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
* Flutter documentation
* Development wiki
* Contributing to Flutter
For release and other announcements, join the
flutter-announce
mailing list. Our documentation also tracks 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] (which 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 programming language], 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