Rancor is used at run time in 141 crates (of which 44 optionally). It is a direct run-time dependency in 10 crates. It's used only as a dev dependency in 5 crates.

Depender (with downloads and own rev deps) Rancor version
1.4M 67 bytecheck ^0.1
1.4M 246 rkyv ^0.1
485K 114 swc_atoms optional ^0.1.0
479K 179 swc_common optional ^0.1.0
474K 120 swc_ecma_ast optional ^0.1.0
366K 8 swc_allocator optional ^0.1.0
132K 4 swc_plugin_proxy optional ^0.1.0
12K 1 istring optional ^0.1
8.7K 18 swc_css_ast optional ^0.1.0
320 1 flare-dht ^0.1