OnceMap is used at run time in 15 crates (of which 1 optionally). It is a direct run-time dependency in 5 crates.

Depender (with downloads and own rev deps) OnceMap version
150 2 solar-sema ^0.4.20
2 bones_ecs ^0.4.12
2 usc ^0.4.5
unitedservices_common ^0.4.5
460 1 weev optional ^0.4.19