Ratatui vs Cursive
Cursive is the other well-known Rust TUI library listed in Ratatui's own documentation as an alternative. Both target interactive terminal applications in Rust but take different architectural approaches.
| Feature | Ratatui | Cursive |
|---|
| Rendering model | Immediate-mode | Retained-mode |
| License | MIT | MIT |
| C dependencies | None | ncurses backend (optional) |
| GitHub stars | 22,472 | ~4,000 |
| no_std support | Yes | No |
| crates.io downloads | 47.1M | ~2M |
Ratatui suits applications that manage their own state and need fine-grained control over layout and rendering: dashboards with live data updates, monitoring tools with custom widget compositions, and any case where you want to control exactly what redraws happen and when. Cursive's retained-mode model may be easier to start with for developers accustomed to traditional GUI frameworks, since its widgets handle their own event routing and state. For new projects, Ratatui's larger ecosystem and active release cadence are meaningful advantages.
Ratatui vs ncurses-Based Development
Before Ratatui, the conventional path to a Rust TUI application was ncurses bindings via crates like pancurses or ncurses-rs. These bindings require a C ncurses library on the target system and introduce FFI complexity at the language boundary. Ratatui's pure-Rust stack removes the C dependency entirely, makes the dependency graph fully manageable through Cargo, and means your binary works on systems where ncurses is not installed.
The practical difference: an ncurses-based Rust app requires the ncurses dev library at build time and ncurses at runtime on every target machine. A Ratatui app compiles to a self-contained binary with no runtime dependency at all.
