libevent-sys is used at run time in 203 crates. It is a direct run-time dependency in 9 crates.

Depender (with downloads and own rev deps) libevent-sys version
900 198 bitcoin-imports ^0.2.6
900 7 libevent ^0.2
750 24 bitcoin-support ^0.2.6
3 bitcoin-test ^0.2.6
2 bitcoin-tor ^0.2.6
3 bitcoin-http ^0.2.6
2 bitcoin-cli ^0.2.6
1 bitcoin-fuzz ^0.2.6
1 transmission-sys ^0.2