Rancor is used at run time in 220 crates (of which 68 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
2.4M 72 bytecheck ^0.1
2.6M 283 rkyv ^0.1
873K 191 swc_common optional ^0.1.0
869K 123 swc_atoms optional ^0.1.0
863K 129 swc_ecma_ast optional ^0.1.0
696K 9 swc_allocator optional ^0.1.0
19K 1 istring optional ^0.1
14K 4 swc_plugin_proxy optional ^0.1.0
9.0K 17 swc_css_ast optional ^0.1.0
1.6K 31 vortex-error optional ^0.1.0
270 1 ps-datachunk ^0.1.0
1 flare-dht ^0.1