ns-router is used at run time in 4 crates. It's used only as a dev dependency in 3 crates (of which 2 directly).

Depender (with downloads and own rev deps) ns-router version
url-tail ^0.1.1
2 ns-env-config ^0.1.2
ciruela ^0.1.5
swindon ^0.1.5
tk-carbon dev ^0.1.1
2 tk-pool dev ^0.1.0