What is flutter

Last updated: April 1, 2026

Quick Answer: Flutter is an open-source UI development framework by Google that allows developers to build cross-platform applications for mobile, web, and desktop from a single codebase using the Dart programming language.

Key Facts

Overview

Flutter is an open-source user interface (UI) framework developed by Google for building beautiful, natively compiled applications for mobile, web, and desktop from a single codebase. Released in 2017, Flutter has rapidly become one of the most popular frameworks for cross-platform application development, used by companies like Google, Alibaba, BMW, and many startups.

Key Features

Flutter's core features include:

Dart Programming Language

Flutter uses Dart, a modern programming language also created by Google. Dart is object-oriented, supports null safety, and is specifically optimized for building UI applications. Developers familiar with Java, C#, or JavaScript typically find Dart easy to learn. The language compiles to native code, contributing to Flutter's performance advantages.

Cross-Platform Capabilities

Flutter allows developers to build applications for six major platforms:

This cross-platform approach reduces development time and costs while maintaining high code quality across all platforms.

Development Community and Growth

Flutter has a rapidly growing community with over 500,000 developers worldwide. The framework is maintained by Google with regular updates adding new features and improvements. Pub.dev, the official package repository, hosts thousands of community-contributed packages. Major tech companies and startups are increasingly adopting Flutter for production applications, indicating strong confidence in the framework.

Related Questions

Is Flutter better than React Native?

Flutter and React Native are both excellent cross-platform frameworks with different strengths. Flutter typically offers better performance and a more polished out-of-the-box experience, while React Native has a larger ecosystem and JavaScript community. The best choice depends on your team's expertise and project requirements.

What programming language does Flutter use?

Flutter uses Dart, a modern programming language created by Google. Dart is optimized for building UI applications, supports null safety, and compiles to native code for high performance. Developers with experience in Java, C#, or JavaScript typically find Dart straightforward to learn.

What are the advantages of using Flutter?

Major advantages include hot reload for fast development, beautiful default UI components, excellent performance on all platforms, a single codebase for multiple platforms, and comprehensive documentation. Flutter also has strong backing from Google and a growing ecosystem of packages and community support.

Sources

  1. Flutter Official Website BSD License
  2. Wikipedia - Flutter (software) CC-BY-SA-4.0