gensym is used at run time in 104 crates (of which 19 optionally). It is a direct run-time dependency in 15 crates. It's used only as a dev dependency in 5 crates.

Depender (with downloads and own rev deps) gensym version
18K 38 futures-signals ^0.1.0
10K 9 cosmian_crypto_core optional ^0.1.1
2.1K 1 godot-ffi ^0.1.1
1.2K 1 picodata-plugin ^0.1
1.1K libside ^0.1
600 2 static_str_ops ^0.1
130 crosstrait ^0.1
2 vineyard ^0.1
wasm-init ^0.1
6 xboot ^0.1.1
hecs-component-provider ^0.1
comprehensive_s3 ^0.1
muchin ^0.1.1
1 heat-sdk-cli ^0.1.1
bittyset ^0.1.1