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

• Install Flutter
• Flutter documentation
• Development wiki
• Contributing to Flutter

For announcements about new releases, follow theflutter-announce@googlegroups.commailing list. Our documentation also tracksbreakingchanges across releases.

The Flutter tool may occasionally download resources from Google servers. Bydownloading 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 prepackagedarchive), the Flutter tool will download the Dart SDK from Google serversimmediately when first run, as it is used to execute theflutter tool itself.This will also occur when Flutter is upgraded (e.g. by running theflutter upgrade command).

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 ofyour choice.

We want to enable designers to deliver their full creative vision without beingforced to water it down due to limitations of the underlying framework.Flutter'slayered architecture gives you control over every pixel on thescreen and its powerful compositing capabilities let you overlay and animategraphics, video, text, and controls without limitation. Flutter includes a fullset of widgets that deliver pixel-perfect experiences whetheryou're building for iOS (Cupertino) or other platforms (Material), along withsupport for customizing or creating entirely new visual components.

Flutter is fast. It's powered by hardware-accelerated 2D graphicslibraries likeSkia (which underpins Chrome and Android) andImpeller. We architected Flutter tosupport glitch-free, jank-free graphics at the native speed of your device.

Flutter code is powered by the world-classDart platform, which enablescompilation 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 ARMfor desktop devices.

Flutter offersstateful hot reload, allowing you to make changes to your codeand see the results instantly without restarting your app or losing its state.

Flutter works with any development tool (or none at all), and also includeseditor plug-ins for bothVisual Studio Code andIntelliJ / Android Studio.Flutter providestens of thousands of packages to speed yourdevelopment, regardless of your target platform. And accessing other native codeis easy, with support for both FFI (on Android,on iOS,on macOS, andon Windows) as well asplatform-specific APIs.

Flutter is a fully open-source project, and we welcome contributions.Information on how to get started can be found in ourcontributor guide.