Rancor is used at run time in 172 crates (of which 50 optionally). It is a direct run-time dependency in 11 crates. It's used only as a dev dependency in 7 crates.

Depender (with downloads and own rev deps) Rancor version
1.5M 69 bytecheck ^0.1
1.5M 261 rkyv ^0.1
658K 114 swc_atoms optional ^0.1.0
644K 179 swc_common optional ^0.1.0
643K 120 swc_ecma_ast optional ^0.1.0
570K 9 swc_allocator optional ^0.1.0
167K 4 swc_plugin_proxy optional ^0.1.0
9.7K 1 istring optional ^0.1
7.2K 18 swc_css_ast optional ^0.1.0
800 1 flare-dht ^0.1
250 1 ps-datachunk ^0.1.0