Romio is used at run time in 5 crates (of which 1 optionally, 3 directly). It's used only as a dev dependency in 4 crates.

Depender (with downloads and own rev deps) Romio version
550 http-service-hyper dev ^0.3.0-alpha.8
320 1 juliex dev ^0.3.0-alpha.7
1 agilulf ^0.3.0-alpha.9
agilulf_driver ^0.3.0-alpha.9
3 agilulf_protocol ^0.3.0-alpha.9
tls-async dev ^0.3.0-alpha.8
tobytcp dev ^0.3.0-alpha.8