Some notes about packages and maintainers.

For Homebrew, created and maintained by ilovezfs
https://github.com/Homebrew/homebrew-core/Formula/getdns.rb
https://github.com/Homebrew/homebrew-core/Formula/stubby.rb

For Arch, created and maintained by Bruno Pagani (ArchangeGabriel)

For OpenWRT, created and maintained by David Mora (iamperson347)
https://github.com/openwrt/packages/tree/master/libs/getdns
https://github.com/openwrt/packages/tree/master/net/stubby

For AstLinux Project, created and maintained by Lonnie Abelbeck (abelbeck)
https://github.com/astlinux-project/astlinux/tree/master/package/getdns

For Genode, created and maintained by Emery Hemingway (ehmry)
https://github.com/genodelabs/genode/blob/master/repos/ports/ports/getdns.port

For Gentoo, created and maintained by CaseOf (Quentin R.?)
https://packages.gentoo.org/packages/net-dns/getdns