Rancor is used at run time in 215 crates (of which 66 optionally). It is a direct run-time dependency in 12 crates. It's used only as a dev dependency in 9 crates.

Depender (with downloads and own rev deps) Rancor version
2.6M 69 bytecheck ^0.1
2.9M 278 rkyv ^0.1
861K 121 swc_atoms optional ^0.1.0
861K 187 swc_common optional ^0.1.0
857K 125 swc_ecma_ast optional ^0.1.0
746K 9 swc_allocator optional ^0.1.0
18K 1 istring optional ^0.1
14K 4 swc_plugin_proxy optional ^0.1.0
6.9K 17 swc_css_ast optional ^0.1.0
550 31 vortex-error optional ^0.1.0
1 flare-dht ^0.1
1 ps-datachunk ^0.1.0