Notes egui window initialisation is too long. We need sub 200ms to first draw, the basic egui frame app takes over a second to render. We need this tool to compile for Linux and Mac, and potentially windows. Here are some alternative options: Nuklear (C) Gio (golang) imGui (C++) FLTK (C++) Fyne (Go) Slint (Rust) Iced (Rust) Azul (Rust)