Flutter is a new way to build high-performance, cross-platform mobile apps. Flutter is optimized for today's, and tomorrow's, mobile devices. We are focused on low-latency input and high frame rates on Android and iOS.

See the getting started guide for information about using Flutter.

flutter

animation
The Flutter animation system. [...]
cupertino
Flutter widgets implementing the current iOS design language. [...]
foundation
Core Flutter framework primitives. [...]
gestures
The Flutter gesture recognizers. [...]
material
Flutter widgets implementing Material Design. [...]
painting
The Flutter painting library. [...]
physics
Simple one-dimensional physics simulations, such as springs, friction, and gravity, for use in user interface animations. [...]
rendering
The Flutter rendering tree. [...]
scheduler
The Flutter Scheduler library. [...]
services
Platform services exposed to Flutter apps. [...]
widgets
The Flutter widgets framework. [...]

Dart Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:io
File, socket, HTTP, and other I/O support for server applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]
dart:ui
Built-in types and core primitives for a Flutter application. [...]

flutter_test

flutter_test
Testing library for flutter, built on top of package:test.

flutter_driver

flutter_driver
Provides API to test Flutter applications that run on real devices and emulators. [...]
flutter_driver_extension
This library provides a Dart VM service extension that is required for tests that use package:flutter_driver to drive applications from a separate process, similar to Selenium (web), Espresso (Android) and UI Automation (iOS). [...]

platform_integration

Android
Flutter platform integration APIs for Android.