Rancor is used at run time in 233 crates (of which 73 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
2.3M 73 bytecheck ^0.1
2.5M 283 rkyv ^0.1
794K 195 swc_common optional ^0.1.0
782K 125 swc_atoms optional ^0.1.0
777K 132 swc_ecma_ast optional ^0.1.0
645K 9 swc_allocator optional ^0.1.0
14K 4 swc_plugin_proxy optional ^0.1.0
13K 1 istring optional ^0.1
10K 17 swc_css_ast optional ^0.1.0
650 3 ps-datachunk ^0.1.0
1.3K 32 vortex-error optional ^0.1.0
1 flare-dht ^0.1