go-nokogiri
Pure-Go XML/HTML + XPath.
go-nokogiri is a pure-Go (CGO_ENABLED=0) XML/HTML parser with XPath and CSS queries and libxml2-faithful serialization — the parsing and DOM core in the Nokogiri tradition, with no libxml2 and no cgo.
Everything is pure Go (CGO_ENABLED=0), standard-library-first, and
cross-compiles to every 64-bit Go target. Licensed BSD-3-Clause.