zip32 is used at run time in 13 crates (of which 1 optionally). It is a direct run-time dependency in 6 crates.

Depender (with downloads and own rev deps) zip32 version
30K 7 orchard ^0.1
25K 14 zcash_primitives ^0.1.1
10K 6 sapling-crypto ^0.1
3.1K 4 zcash_client_backend ^0.1.1
470 2 zcash_keys ^0.1.1
270 zcash_client_sqlite ^0.1.1