flatbox_ecs is used at run time in 5 crates (of which 2 optionally).

Depender (with downloads and own rev deps) flatbox_ecs version
flatbox ^0.1.0
1 flatbox_egui ^0.1.0
1 flatbox_systems ^0.1.0
4 flatbox_assets optional ^0.1.0
3 flatbox_render optional ^0.1.0