susyp2p-tcp is used at run time in 1 crate (of which 1 optionally). It's used only as a dev dependency in 8 crates.

Depender (with downloads and own rev deps) susyp2p-tcp version
susyp2p ^0.7.0
1 susyp2p-dns dev ^0.7.0
1 susyp2p-identify dev ^0.7.0
3 susyp2p-mplex dev ^0.7.0
1 susyp2p-noise dev ^0.7.0
1 susyp2p-ping dev ^0.7.0
4 susyp2p-secio dev ^0.7.0
1 susyp2p-kad dev ^0.7.0
1 susyp2p-websocket dev ^0.7.0