curve25519-dalek-fiat is used at run time in 127 crates (of which 1 optionally). It is a direct run-time dependency in 5 crates. It's used only as a dev dependency in 9 crates.

Depender (with downloads and own rev deps) curve25519-dalek-fiat version
4.6K 5 ed25519-dalek-fiat ^0.1.0
900 3 x25519-dalek-fiat ^0.1.0
1 diem-framework-crypto ^0.1.0
4 diem-crypto ^0.1.0
1 bytecode-interpreter-crypto ^0.1.0