Punycode is used at run time in 17 crates (of which 4 optionally). It is a direct run-time dependency in 10 crates. It's used at build time in 2 crates (1 directly).

Depender (with downloads and own rev deps) Punycode version
65K 101 minreq optional ^0.4.1
35K 5 fqdn optional ^0.4.1
420 xmail ^0.4.1
210 ast-demangle ^0.4
190 1 sns-sdk ^0.4.1
180 twistrs build ^0.4.1
whos ^0.4
1 yozuk-model ^0.4.1
kuso-subdomain-adder ^0.4.1
150 1 yozuk-core-skillset optional ^0.4.1
slimweb optional ^0.4