FTXUI is a C++ library for building terminal user interfaces with a functional programming approach.
The library addresses the challenge of creating interactive terminal applications by providing a declarative, component-based system. Rather than managing low-level terminal state directly, developers compose UI elements functionally, describing what the interface should look like. The tool handles rendering, input processing, and screen updates automatically, abstracting away platform-specific terminal complexities.
FTXUI suits developers building command-line tools, system utilities, or monitoring dashboards who want polished interactive interfaces without wrestling with curses or raw terminal APIs. It works across platforms, making it valuable for projects that need consistent behavior on Linux, macOS, and Windows. The functional composition model appeals to developers familiar with modern UI frameworks, as it lets you build complex layouts by combining simpler components rather than imperative state management.
The project maintains active engagement with its user base, responding to reported issues and reviewing pull requests. Development includes comprehensive test coverage to ensure reliability across different terminal environments and platforms. The maintainers provide documentation in multiple languages and curate a collection of examples demonstrating various UI patterns and capabilities.
