FTXUI is a lightweight C++ library that brings modern, functional programming patterns to terminal-based user interfaces. Inspired by React and functional programming paradigms, it provides an elegant and intuitive way to build interactive command-line applications.

Key capabilities include:

Functional architecture - Compose UIs using a declarative, React-inspired syntax with simple element composition
Rich interaction support - Full keyboard and mouse navigation for responsive terminal applications
International text - Complete UTF-8 and fullwidth character support for global applications
Visual effects - Built-in animations and drawing capabilities to create dynamic interfaces
Cross-platform - Runs on Linux, macOS, Windows, and WebAssembly with consistent behavior
Flexible layouts - Arrange elements horizontally, vertically, in grids, or with flexbox for responsive designs
Styling options - Apply colors, text decorations (bold, italic, underline), borders, and separators
Zero dependencies - Standalone library with no external requirements
Multiple build systems - Integrates with CMake, Bazel, vcpkg, Conan, and package managers across major Linux distributions

The library emphasizes clean code through pipe operators for chaining decorators, comprehensive documentation with interactive examples, and production-ready practices including tests, fuzzers, and automated CI/CD pipelines.