parity-bip39 is used at run time in 491 crates (of which 16 optionally). It is a direct run-time dependency in 2 crates. It's used only as a dev dependency in 5 crates.

Depender (with downloads and own rev deps) parity-bip39 version
447K 478 sp-core ^2.0.1
16K 19 sc-cli ^2.0.1