ark-r1cs-std-zypher is used at run time in 11 crates (of which 9 optionally). It is a direct run-time dependency in 8 crates.

Depender (with downloads and own rev deps) ark-r1cs-std-zypher version
1 zshuffle ^0.4
6 ark-bn254-zypher optional ^0.4.0
1 ark-crypto-primitives-zypher optional ^0.4.0
ark-ed-on-bls12-381-zypher optional ^0.4.0
4 ark-ed-on-bn254-zypher optional ^0.4.0
1 ark-groth16-zypher optional ^0.4.0
1 ark-secp256k1-zypher optional ^0.4.0
ark-secq256k1-zypher optional ^0.4.0