Rancor is used at run time in 65 crates (of which 24 optionally). It is a direct run-time dependency in 4 crates.

Depender (with downloads and own rev deps) Rancor version
1.4M 64 bytecheck ^0.1
1.5M 235 rkyv ^0.1
18K 1 istring optional ^0.1
550 flare-dht ^0.1.0