Shipped foundations plus where tui is heading in 2026. Planned items are aspirational, not yet implemented.
- Differential line renderer with synchronized output
- Main-buffer rendering (scrollback preserved)
- Overlay system with focus capture
- Frame-paced loop, resize detection, tick callbacks
- xterm + Kitty key parsing, scoped keybindings
- Fuzzy match, autocomplete engine
- Editor (undo / kill-ring), Markdown, Diff, images, lists
- Pure-Python image sizing, wcwidth width handling
- Tables and scrollable viewports as first-class components
- Mouse events and hit-testing
- Theming tokens shared across components
- Sixel image protocol for broader terminal support
- Layout helpers beyond vertical stacking
- Accessibility / screen-reader hints