Flutter is an open-source UI development framework developed by Google. It allows developers to build natively compiled applications for mobile, web, and desktop using a single codebase. Flutter uses the Dart programming language and comes with a rich set of customizable widgets that make it easy to create beautiful and responsive user interfaces.

The first alpha version of Flutter was released in May 2017.

Flutter is gaining popularity for several reasons :

Cross-platform development : Flutter allows developers to write code once and deploy it on multiple platforms, including Android, iOS, web, and desktop. This significantly reduces development time and costs, making it an attractive option for businesses and developers.

Fast development : Flutter offers a hot reload feature that allows developers to make changes to the code and see the results instantly without having to restart the application. This makes the development process faster and more efficient.
Rich set of widgets : Flutter comes with a rich set of customizable widgets that can be used to create beautiful and responsive user interfaces. These widgets can be customized to match the brand and design requirements of the application.

High-performance : Flutter is known for its high-performance and fast app startup time. It achieves this by using a compiled codebase that runs directly on the device's hardware.

Strong community support : Flutter has a strong and growing community of developers who are actively contributing to its development. This ensures that the framework is constantly improving and evolving, and there is a wealth of resources and support available to developers.