solana-keypair is used at run time in 229 crates (of which 43 optionally). It is a direct run-time dependency in 43 crates. It's used only as a dev dependency in 37 crates (of which 9 directly).

Depender (with downloads and own rev deps) solana-keypair version
113K 13 solana-connection-cache =2.2.1
113K 11 solana-quic-client =2.2.1
113K 3 solana-thin-client =2.2.1
113K 3 solana-udp-client =2.2.1
110K 265 solana-client =2.2.1
110K 30 solana-streamer =2.2.1
101K 40 solana-transaction ^2.2.1
100K 40 solana-vote-program =2.2.1
98K 5 solana-client-traits ^2.2.1
98K 6 solana-quic-definitions ^2.2.1
96K 4 solana-genesis-config ^2.2.1
94K 12 solana-system-transaction ^2.2.1
284K 672 solana-sdk optional ^2.2.1
80K 47 solana-clap-utils =2.2.1
112K 26 solana-perf optional =2.2.1
29K 11 solana-faucet =2.2.1
26K 5 solana-tls-utils =2.2.1
16K 10 solana-clap-v3-utils =2.2.1
2.2K 4 litesvm ^2.2
1.6K 3 solana-cli =2.2.1
1.5K 1 solana-tps-client =2.2.1
1.1K solana-keygen =2.2.1
950 agave-install =2.2.1
850 agave-cargo-registry =2.2.1
800 solana-tpu-client-next =2.2.1
290 1 txtx-addon-network-svm-types ^2.2.1
160 litesvm-loader ^2.2
150 litesvm-token ^2.2
solana-keyconv ^2.2.1
442K 78 spl-token-2022 dev ^2.2.1
181K 8 solana-zk-token-sdk dev =2.2.1
138K 15 solana-config-program dev =2.2.1
117K 52 solana-rpc-client dev =2.2.1
113K 3 solana-rpc-client-nonce-utils dev =2.2.1
101K 7 solana-secp256k1-program dev ^2.2.1
99K 7 solana-ed25519-program dev ^2.2.1
95K 3 solana-offchain-message dev ^2.2.1
95K 5 solana-presigner dev ^2.2.1
85K 13 solana-zk-sdk dev =2.2.1
83K 7 solana-vote dev =2.2.1
56K 1 solana-transaction-metrics-tracker dev =2.2.1
31K 5 solana-cost-model dev =2.2.1
21K 10 solana-svm dev =2.2.1
19K 3 agave-transaction-view dev =2.2.1
20K 12 solana-runtime-transaction dev =2.2.1
17K 27 solana-cli-output dev =2.2.1
12K 6 solana-compute-budget-instruction dev =2.2.1
10K 19 solana-entry dev =2.2.1
10K 9 solana-storage-bigtable dev =2.2.1
9.1K 8 solana-poh dev =2.2.1
7.1K 1 solana-wen-restart dev =2.2.1
7.1K 4 solana-unified-scheduler-pool dev =2.2.1