either_of is used at run time in 84 crates (of which 20 optionally). It is a direct run-time dependency in 3 crates. It's used only as a dev dependency in 5 crates.

Depender (with downloads and own rev deps) either_of version
84K 195 leptos ^0.1.5
68K 33 leptos_router ^0.1.5
30K 4 tachys ^0.1.5