polkadot-ckb-merkle-mountain-range is used at run time in 55 crates (of which 25 optionally). It is a direct run-time dependency in 1 crate.

Depender (with downloads and own rev deps) polkadot-ckb-merkle-mountain-range version
3.6K 16 sp-mmr-primitives ^0.7.0