tui-realm is a Rust library/framework for building terminal user interfaces (TUIs) using a component-based, event-driven architecture. It is not a standalone application but a reusable framework that wraps ratatui (formerly tui-rs) and provides an Application loop, Component/AppComponent traits, a Model/Update/View pattern, and a subscription system for routing events between components. The monorepo is organized as a Cargo workspace containing the core `tuirealm` crate, a `tuirealm_derive` procedural macro crate, a standard library of reusable components (`tui-realm-stdlib`: Input, Label, List, Table, etc.), and optional integration crates `tui-realm-textarea` and `tui-realm-treeview`. The framework is designed to reduce boilerplate by centralizing focus management, event routing, and state handling in the Application/View layer, while allowing developers to define custom components and event sources via Ports and Subscriptions.