solana-keccak-hasher is used at run time in 88 crates (of which 3 optionally). It is a direct run-time dependency in 7 crates. It's used only as a dev dependency in 13 crates (of which 2 directly).

Depender (with downloads and own rev deps) solana-keccak-hasher version
329K 604 solana-program ^2.2.1
124K 2 solana-example-mocks ^2.2.1
38K 22 solana-bpf-loader-program =2.2.1
550 3 mollusk-svm-fuzz-fs ^2.2
550 2 mollusk-svm-fuzz-fixture-firedancer ^2.2
450 2 mollusk-svm-fuzz-fixture ^2.2
110 spherenet-program ^2.2.1
101K 7 solana-secp256k1-program dev ^2.2.1
1.7K 4 agave-precompiles dev =2.2.1