FireMonkey is a cross-platform GUI framework developed by Embarcadero Technologies. It allows developers to create applications that run on multiple operating systems, including Windows, macOS, iOS, and Android. FireMonkey uses a single codebase, enabling efficient development and maintenance of applications across different platforms. The framework supports rich graphics and multimedia, making it suitable for creating visually appealing applications. It includes features like 2D and 3D graphics, animations, and support for various user interface controls. FireMonkey is particularly popular among developers using Delphi and C++Builder for rapid application development.