Rancor is used at run time in 205 crates (of which 58 optionally). It is a direct run-time dependency in 12 crates. It's used only as a dev dependency in 8 crates.

Depender (with downloads and own rev deps) Rancor version
2.1M 267 rkyv ^0.1
2.0M 68 bytecheck ^0.1
680K 117 swc_atoms optional ^0.1.0
677K 183 swc_common optional ^0.1.0
672K 122 swc_ecma_ast optional ^0.1.0
568K 9 swc_allocator optional ^0.1.0
43K 4 swc_plugin_proxy optional ^0.1.0
17K 1 istring optional ^0.1
8.6K 18 swc_css_ast optional ^0.1.0
480 1 flare-dht ^0.1
1.8K 29 vortex-error optional ^0.1.0
230 1 ps-datachunk ^0.1.0