maybe-rayon is used at run time in 105 crates (of which 32 optionally). It is a direct run-time dependency in 4 crates. It's used at build time in 1 crate (). It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) maybe-rayon version
318K 5 rav1e ^0.1
39K 8 halo2_proofs ^0.1.0
550 2 halo2-axiom ^0.1.0
550 zcash_client_sqlite ^0.1.0