gensym is used at run time in 100 crates (of which 19 optionally). It is a direct run-time dependency in 13 crates. It's used only as a dev dependency in 3 crates.

Depender (with downloads and own rev deps) gensym version
8.3K 37 futures-signals ^0.1.0
2.3K 1 godot-ffi ^0.1.1
1.1K libside ^0.1
800 2 picodata-plugin ^0.1.0
320 4 xboot ^0.1.1
290 2 static_str_ops ^0.1
130 crosstrait ^0.1
2 vineyard ^0.1
bittyset ^0.1.1
wasm-init ^0.1
hecs-component-provider ^0.1
comprehensive_s3 ^0.1
1 heat-sdk-cli ^0.1.1