solana-signature is used at run time in 70 crates (of which 13 optionally). It is a direct run-time dependency in 9 crates. It's used only as a dev dependency in 12 crates.

Depender (with downloads and own rev deps) solana-signature version
151K 644 solana-sdk optional =2.1.6
21K 3 solana-transaction-status-client-types =2.1.6
270 solana-client-traits ^2.1.0
170 2 solana-transaction ^2.1.0
140 solana-offchain-message ^2.1.0
100 7 solana-signer ^2.1.0
7 solana-keypair ^2.1.0
1 solana-presigner ^2.1.0
170 solana-transaction-context optional ^2.1.0