subtle-ng is used at run time in 234 crates (of which 44 optionally). It is a direct run-time dependency in 8 crates. It's used only as a dev dependency in 16 crates.

Depender (with downloads and own rev deps) subtle-ng version
227K 21 curve25519-dalek-ng ^2.5
13K 4 secp256kfun ^2
430 1 ore-rs ^2.5.0
4 sunscreen_curve25519 ^2.5
secp256kfun_parity_backend ^2
2 sunscreen_bulletproofs ^2.4
secp256kfun_k256_backend ^2
1 schnorrkel-purplecoin ^2.5.0