OnceMap is used at run time in 12 crates (of which 1 optionally). It is a direct run-time dependency in 4 crates.

Depender (with downloads and own rev deps) OnceMap version
130 2 usc ^0.4.5
2 bones_ecs ^0.4.12
unitedservices_common ^0.4.5
100 1 weev optional ^0.4.19